Whatever you guys do, go with the 40 oz. marine carpet like the stuff that Rex sells, its a little more cash, but what you end up with is far better than a 30-20 oz. carpet! feels great on the feet, more durable, does not stain lighter colored towels or clothes when wet on the floor of the boat!
one more thing, 40 oz. carpet hides a tone of imperfections in the floor of your boat, it has got to be the easiest carpet to lay down and tuck into the corners of a stringer and/or bulk head! just my .02