I also would put "Too Old" at the top. Everyone has listed quite a few on behalf of Fred, and there are more yet.
I would put Steve, "BoardGod2" a close second. If y'all knew how many ours he puts into Offshoreonly, Offshore racing, and performance boating, you would easily agree.
Third would be tough, but somewhere between;
Sean Stinson, for his experiences, (both on and off the water)
and Waterfoul, for being a true boater from the heart, and for being the biggest "post whore" in the history of OSO.