I agree with Steamin' Rice, the water shouldn't be a problem inside the breakwater. The ramp at Cabrillo Beach is pretty good, although I haven't been there in a few years. The entire trip is inside the break water. On Saturday it was very rough outside, but still nice inside the break water. There is a nice courtsey dock at Shoreline Village in long beach, but bring bumpers. You should have a fun trip. Not sure if there is water to wash and flush at that ramp, Marina Del Rey has water. Bring a hose and lots of quarters if there is water you will be ok.
I really want to go to the SCOPE open house, but I will be in the British Virgin Islands on a boat having too much fun.
David