Finally got to play Sandpiper with the fellow Gurus on a breezy 5/15 late morning. Tee boxes were level with very little divot damage (Not too many irons hit from those back tee boxes...). Fairways were straight up impressive. Cut nice and tight, great lies pretty much everywhere. Rough was a good, sticky rye overseed and provided nice lies, especially greenside. I thought the greenside bunkers were great sand-wise. A couple were damp and as mpisarski said earlier, the front trap on 18 had standing water. I'm just so used to awful bunkers that this was leaps and bounds better than the norm even though they weren't perfectly maintained. Greens were firm and quite tricky to read. I was lucky to make a few nice putts but I never felt comfortable at any point during the day. Playing conditions were extremely difficult with the 15-20 mph onshore breeze blowing. Can't wait to be back.

Played morning of 4/8 walking from the blues with my club.
Everything apart from the bunkers was really solid. Greens were rolling true and well. Fairways had really nice kikuyu coverage for the vast majority of the playing surfaces with just some divot damage to report. Rough was hit and miss, which is the norm here. Some good spots and some definite bare dirt and "nesty" spots as well. Tee boxes were all pretty level with some club gouges on the par 3s that needed some filling. Bunkers were thin and crusty, not a great combo.
POP was right around 5 hours, which is pretty normal here.
Very much worth the normal rack rates here and a very flat walking course.

Noon on 4/6 with the Gurus on a good day for golf in Chino (ie It wasn't 90 degrees and blowing 20mph). This will be the cliffsnotes version of all the previous reviews:

Tees and fairways: Always the same at Los Serranos, good lies in the kikuyu, the occasional thin patch (pretty sparse this time around, which is good) and tees solid, if a little unlevel at times. I don't think I've seen these conditions change at either course since the first time I played here at least 10 years ago.
Rough: Hodgepodge of really good to "ehhhhhh". You could get really nice kikuyu (usually good around the greens) or you could get the dreaded clover patch (more likely in the fairway rough). Again, very typical.
Greens: Bumpy and not completely healed from punching. Call your bank shots!
Bunkers: DO NOT GO IN THE GREENSIDE TRAPS ON 16!! They need some sand. The rest looked pretty normal (crusty and brown).

POP right at 4 hours.

Played early in the morning on 4/6 for my buddy's birthday round (We split my "guest fee"). The two of us skipped through the two foursomes in front of us (shop would not let us out early) and finished in a little under 3 hours.
The greenside bunker renovation/renewal from the past year is done and the traps look great. My biddy did have to deal with some of the lining coming up in one trap but other than that there were no other issues. Greens were rolling well and true, unfortunately the pins were on slopes all day, which was aggravating. Fairways were in nice shape with a few divot patches that needed some TLC put nothing out of the ordinary. Rough was the typical bingo card of lies and grass types, never quite knowing what you were going to get. Back tees were a little chewed in spots (#18 comes to mind). Worth a birthday visit but not a good value for normal rack rates.

Tee time at 10:55 this morning and was off 15 minutes late. POP front 9 of 3 hours and a total POP of 5.5 hours. On a Monday. Ouch.

Tee boxes on #5, #11, #14 and #15 were either temporary or moved to a forward box due to the new grass on the back box. Temporary green on #11 about 60 yards short of the actual green.

Not much to add to ringworld's review of conditions other than the greens were playing quite firm (with lots of ballmarks) and be sure to bring a hammer for the tee boxes.

Played Monday 2/13 at 10:50 walking from the black tees.

Unsurprisingly there is still a lot of standing water and/or mud in the low lying areas, but other than that I thought the course was in more than passable shape. This place has a bit of a reputation for being A) not all that well maintained and B) playing slower than a snail travelling up-hill. POP was solid at just over 4 hours. Greens were receptive, but not wet with more than a few patches of flowering Poa. Can't cut them too tight right now so it makes sense. Fairways were either wet and boggy or realllllly nice lush and green. Rough was thick juicy and can't wait to see a mower blade once things dry up a bit. Bunkers had the consistency of powdered sugar. Lots of apparently new sand and might actually have too much. Tee boxes were overall pretty good with some divot damage on the 3s and a few being too wet for a recent mow. Overall it beat expectations and wasn't bad for a holiday round under $35.

Played 1/4 at 10:30 with fellow GKer dconnally from the blue tees.

The recent rains have not done the course many favors. Lots of soft areas underfoot and more than a few sloppy tire tracks. Surprising drainage issues for a course built on a hillside.

Current overall conditioning reminds me of Black Gold back when they were undergoing their turf change to kikuyu. Most fairways where a mosaic of different grass-types/mud in average to poor shape but the few that were all or most kikuyu (#12 comes to mind the most) were in quite good shape. Rough was much the same with a hodgepodge of thin, muddy rye, lush rye, and spots of kikuyu. It was really a coin flip on what kind of lie you were going to receive.
I was in one bunker and it was fine. Unsurprisingly damp and dense underneath with about a 1/4 of finer stuff on top. It looked like all bunkers were raked by the crews and they were probably the best part about the course (not high praise unfortunately).
Greens had recently been lightly sanded, were receptive, but were very bumpy and inconsistent. Tee boxes were... to put it lightly... horrible. Tiny, wet, unlevel, HEAVY divot damage. They have many tee boxes per hole so they really should do a better job at moving them around to keep the playing surfaces reasonable. POP was 4:40 and we were on the 4-some in front of us the entire time. Saw the beverage cart on hole 2 then never saw it again. All the water stations on the course were missing the "water" portion of the station. The $35 rate we paid via the course website felt like an overpay.

Played 12/29 at 7:30 from the blue tees.

Like Brookside two days before, CM had many of the same SoCal muni characteristics. Good greens with some divot damage (and running about a foot slower than Brookside) but still consistent. Fairways were overall quite good with a few patches of bare kikuyu. Rough was much the same as the fairways, just an inch longer. Tee markers were set wide on the gigantic tee boxes giving PLENTY of area to tee up. They were charging their holiday rates all week ($47 to walk) which is more than I'd really want to pay but still not bad for what you're getting (Also, Orange County... grumble). It's in better shape than Mile Square Players right now so it's likely the best muni option in the immediate area. POP was just over 4 hours that early in the morning and the bev cart came around a few times.

Played 12/27 with my club at 9:20 in the morning off the blue tees.

Brookside is in peak SoCal muni condition. Fairways, rough, and tee boxes run the gamut from "Hey, that's pretty good" to "Yikes, I wish my ball were 2 feet in any direction so I could be on grass". The recent rains have made the course damp but overall the fairways are thin making for a strange combination. The fairways will be a parking lot on Monday so hopefully the maintenance crews are up and ready to go to deal with tire tracks on wet turf. I'd stay clear for a couple of weeks after the Rose Bowl for that very reason.
The greens are very good and VERY quick, especially downhill. Stay below the hole if you want to score, otherwise have fun with your 3 putts. The price is right for $50-$55 or so with the greens being so good. It's a fun track and worth my yearly visit.

Another day at the Goose with the GK Gurus.

Really, not much to add to the previous reviews. Tee boxes, fairways, rough, and sand remain very good as usual. Greens were trending towards the bumpy side and can be inconsistent although our windy conditions had more to do with that than anything else. The only trouble spot was the front of the green on #5 and that green is so big that I'm surprised they haven't decided to convert that section to more chipping area. This is always a fun place to play and it can show some teeth when the breeze kicks up. Big thanks to Goose for having us out and the staff is always top notch.
Always recommended.

Played my GK Cup match with mpisarski01 here on 9/3 @ 9:24. We were off about 20 minutes late.
Overall El Do was in very solid shape. Fairways and rough both had solid coverage with a few patches in the rough that needed some work. You're never going to get a lot of rollout here due to the kikuyu fairways, but lies were consistently good. Most bunkers were in very nice shape. Those that had been renovated had new, white sand. Some still had the regular, crusty brown stuff but there was enough of it to get good lies. Greens were rolling pretty well with a few bobbles by the time the afternoon rolled around. These were probably the firmest I've seen them which took some getting used too. POP was a robust 5:15.
Will continue to come back because it's my favorite muni in the area.

Played with Rat-Patrol for our GK Cup match on Sunday with a 3:04 tee time. We got there early and ended up heading out an hour ahead of schedule(!)
Greens were very solid outside of #2 which showed some definite heat stress on the front of the putting surface. The rest were fine with a few ball barks and running slower than they looked, especially into the grain.
Bunkers had excellent sand that people should learn to rake. Footprints aren't fun to hit out of people!
Rough was a mish-mash of everything. Most common was shaved down kikuyu that was basically like hitting out of a disintegrated wicker chair. There was some browned bermuda in spots, thin green bermuda, whispy rye, thick lush rye... the list goes on. Bring your bingo card and you'll fill it out by hole 6.
Fairways were the star of the show. Absolutely fantastic. Not a lot of roll out but every lie was perfect. Best I've played this year and it's not really close.
POP was a nice 3:30 and the service was very good.
Obviously not worth the rack rate (few courses would be at their prices) but GN does have deals available at a much more reasonable rate.