I decked out a 14' jon. It was wider though 46" maybe? It did help a little bit with the stability. 1 person standing was no problem. When two people would stand, you had to be careful.
I had A LOT of weight in the boat on more than 1 occasion.
4-5 batteries, me (220lbs), my dad (250lbs), tournament load of gear for 2 people, 15 gallons(?) of water in the livewell, etc...
There were times when we were LOW in the water, but never had a problem.