I have a 14' Northwood with a 15 Hp Yammie on the back. The boat has a 68" beam and a 20" transom. The Northwood hull is made by Smokercraft. I have been out in some pretty rough weather in MA 11 & 12 and never even questioned the stability of my boat. I don't think I could flip my boat if I wanted to. IMHO, the wider the boat the better. Crestliner makes a 14' boat with a 80" beam.
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Carl C.