+1 for What Osprey said. They just did the flush-n-flows a little over a week ago, so it should be somewhat decent.
public vs private is a pain in the ass. Blue paddles = public, red = private.
the Fish are spawning now, so be aware to not walk in the Redds...fishing to the spawners is your own decision.
Stop in at the Reef fly shop; the guys are pretty kind with giving out beta. Can't miss it, its right on the road to the gas station.
Sloans seems to have the cheapest shuttle. it's the gas station in Alcova. They also have a mildly decent zip-lock bag lunch for like 7-10$ I forget.
3x tippet is common. run 10-12ft to first fly.
If you're competent with multi-fly setups, run 3 flies.
Common rig is Rock Worm/Analid or San Juan Worm, Egg or an Alaskan Egg Rig and Hot-Head Leaches / Wooly Buggers. Right now, eggs might kick ass.
BB splitshot tungsten 8-12" above your top-most fly or below your bottom fly. Run a thingamabob about 4-8ft above the first fly so that your bottom fly is just hitting bottom. You'll know when it's right when you start seeing the indicator "tick" freqeuntly. Anything that takes the indicator under for longer than a tick perform a soft-set.
long drifts are critical. The captain needs to be aware of leading/dragging the fishing setup. mending is also critical. Place your flies 8-15' from the boat...whichever allows you to manage line easily.
PLacement on that river seems to be key. In my experience, the Guides know exactly where to be in each section and that makes the largest difference between a 5-10 fish day or a 50-100 fish day.
Bring a boat net...the pigs are heavy, long and skiddish when they approach your boat. A small wading net is nearly worthless from the captains seat.
Dam to Alcova is typical...if the weather is nice, the put-in will back up around 8-9am...expect traffic jams on the water and only getting to back-row a section once, maybe twice. If you have the extra free time, drifitng to Gov't Bridge helps avoid the take out jam.
Expect to row downstream in the afternoon...it sucks. Last month when we were up there, we saw a guy actually pull a small trolling motor out of his high-side to motor downstream. brilliant...gets you back to the Sunset sooner for beer.
speaking of which, the Sunset Saloon has decent fried pickles and PBR.
The closer you get to Lusby, the froggier the water gets. Don't hesitate to chuck super huge streamers. I carry an 8WT floating setup for this reason alone.
hope that helps.