If you are talking the campsite just west of windy point, you need a 4x4 for sure (which you'd probably have anyway to travel those roads) - 1 to get through the logging road, 2 to get down the beach. I haven't been to that one for about 7 years, but it was just a decent cobbly launch - stable enough that I didn't spin my wheels. It worked, but it's no marina!
Very little in the way of protection from the elements once you are out in the chuck - cross the narrows at the slack or start of the flood, or do what we did and just follow 'the other guy' <img src=icon_smile_shock.gif border=0 align=middle> JK.....I wouldn't get out there with anything smaller than a 16', larger would even be better.
Definitely serious salmon stacking outside the narrows usually in the first few weeks of Sept. Often we had gone and got lucky as they were sitting in the 'pool' on the lake side of things - just make damn sure your engine doesn't die on you as the current is strong.
I was an idiot when I was young (in a 12'!) Respect the area something fierce, unlike myself.
As to fishing now, never heard of people venturing up there for early summer - seems to me there would be wiser places to fish, but I'm not the expert on the year round fishery there.