I've a got an '06 228 with a 3.3L F250. Boat has a hardtop, pulpit, two fuel tanks (main and aux), and no bottom paint. Engine runs great; Doesn't seem to be lacking power at all.
That said, it has a Yamaha SWS II 15 1/4" x 17" prop on it. At WOT throttle, with a full load (4 people 1.5 tanks...