What type of boat is the best crabbing boat? What is the difference in operation of flat,semi v, and v boats?

I want to know what the main differences in the types of boats are, as in operation, handling, turning quickness, etc. Also I want to know which type is best for crabbing? I thought flat bottom but I am not sure. I wanted a boat to do crabbing, fishing, and some just cruising with friends. Anybody have any suggestions?