interesting project there and welcome to OSO. not sure i would classify that as a very agressive offshore hull. i think you are right in thinking fast fishing boat. that looks like a pretty large volume hull with a great deal of bow area, sort of a blunt angle of attack. i would also guess that it is somewhat on the heavy side which will help you in rough water ride quality. looks like you are doing a great job on it, keep us posted on the progress we love this kinda stuff around here
by the way do you have any pics of the deck and cockpit and what is the history of that hull, i've never seen one ?