There are many reasons for deciding in favor of a big boat versus a bigger boat. Don't let crossing the broads be a deciding factor. I used to travel from Center Harbor to the Weirs, Alton Bay, and Wolfeboro in my 14' Sears aluminum boat with my 14 hp Scott outboard. Did I go into the Broads when it was stormy? No, I stuck to the shoreline and was perfectly safe.