Because you weigh significantly more with a hooded suit, boots, and gloves on, how much do you all increase your board size by come winter time. Do you just go wider, longer or all around? assuming a decent swell.
I have noticed that the wave power usually makes up for any flotation that you would be lacking from using your regular short board. Generally speaking, I don't change what board I use based on the wetsuit and weight differential but rather on the wave size/shape.