mmandley - Thanks for the great info as well as everyone else !!!!
I'm going to go ahead and purchase the Polk DB651's.... Found a great deal on Ebay.... 2 pairs for $110 shipped.
As for the amp, I'm still uncertain whether I'm going to install one or not. I'll see how the speakers sounds after they are installed then go from there.

Oh yeah I also got the boat out of storage today.... Now time for the fun part of de-winterizing and a full detail!!!!!!
I just purchased some Collinite fleetwax (paste) and some Klasse all in one polish. Supposed to be some of the best stuff out there.
Last season I was using Collinite's fiberglass boat wax and that stuff was really good as well...