[Spike-A-Pike]

I would say the may factor in a jon boats stability is the amount of surface area it puts on the water. The longer and wider the better. If you are wanting to go fishing with a growing family, a 12 foot jon boat won't last very long; they are only rated to carry a little under 300#, is only 32" wide and is rated for a 3 hp engine. If you try to add a few creature comforts and you may overload the boat's capacity. Be sure you don't go to small.