Don't park down at the turn around for the ramp and start tying your boat down. Big trucks & long trailers don't always have the turning radius in order to back their trailer down. The place for unstrapping and strapping up is above in the parking lot.
Also, those launching in the dark of the morning, turn your headlights off (parking lights are fine). You are totally blinding everyone else at the ramp because of the angle of your rig on the ramp itself.
The depth of the water in the launch lane along side of the dock is pretty much 3 to 4 ft deep for the last 2/3rds of the 100ft long dock. The end of the dock measured solidly 4+ft deep (38" to 42" last year). Don't drift or drive towards the rock jetty where a couple of rocks are under the surface and it shallows up quickly. On the west side of the dock, the water depth is pretty much 4ft deep at the end, then gradually shallows up towards shore. Note: North winds wreak havoc getting in and out and for the top of every wave, there is also a bottom that generally reduces clearance to the bottom by as much as it raises it. Southwest and west winds, blow you away from the dock when coming in and there isn't a lot of wiggle room if you drift off towards the rock jetty.
The ramp is still working out fine. So far my trailer wheels are still on the cement ramp getting in and taking out. North winds do drive in some sand, but so far, it hasn’t been too bad. The dock is the same length is has always been.
At the end of the dock, metal tabs stick out above the water (they would connect to another section of dock if needed as the water drops off about 30ft beyond the current installation) so be careful pulling your boat around to the other side of the dock or pulling straight in in the wind. Also, the dock pipes along side have bumbers slid over them, but note that they are located outside the dock so when pulling in, be sure nothing is sticking out of your boat such as leaving rod holders on the boat or rods propped up on the docking side of the boat...some bow mounted electric trolling motors could also get caught when coming in when windy. Some boats whose running lights are side mounted also catch the pipes so be sure you don't tear one off on a hard landing in the wind.
There is still a bottom rise in the launch lane about mid-way down the dock. It is not problematic at this time. The marina folks did a good job of maintaining a launching channel last year but by November boats over 20ft long were having difficulty. We hope to retain our nearly 6 inches of water through the summer and into fall to keep us launching most all boats through the season. It will be very similar to last season’s launching with a few bonus inches of water if we don't see an extremely hot summer and increased evaporation. We should get through ok. Our worst of worry would be the drop off the end of the cement ramp once our trailer wheels are off the end of the ramp to float the boat off the trailer. I believe we are still several weeks away from that at this time.
I don't advise power loading your boat on the trailer at this time. The thrust from your prop or jet blows out the sand at the end of the cement causing a step to form which will eventually cause damage to trailers. The prop wash pushes the sand and fine gravel out from the cement and drops it on top of the shoal that starts about halfway down the dock. The shoal ends up about a foot shallower than the rest of the channel and repeated power loading will eventually lead to a rise of the shoal & the need for blowing it out to keep a launch channel. You can also screw up your prop and lower unit if you aren't careful and take note that while you are power loading you are pumping all that grit through your empellor and water pump which can put a lot of wear in a short period of time....and pretty soon you see your temp gage rise a bit and eventually just a dribble out of the pee tube. Why take chances and why cause damage. We still can't afford to have things screwed up.
Spalding' ramps were notorious for loading up the channel when we could launch at the new marina and the dredging only lasted for half of one season and half of the next. 99% of the problems came from power loading boats where the bottom was mud. Be thankful we have sand and gravel down at the south end low water ramp.
The springs (since closing the Bly Tunnel valve) are probably capable of adding 5-6 inches to the lake without local moisture which buys a month of evap in summer....good for about a foot of water per year that was drained off the lake for decades. Every inch still counts and we are still 14ft below our prime elevation and several feet below launching at the ramps at Stones and Spalding this year. But the north basins look much better now than they did last year....just wait for fall, most of it will not be far from where it was last year. The water is now over the grass line from two years ago, but still a long way to go to reach any tules (which remain browned out and layed down).
Lassen National Forest has NO PLANS FOR IMPROVING LAUNCHING CONDITIONS. PERIOD. END OF STORY.