Wow, alot of good point's....creeker I may just do that.
I found a frameless toon that's made by Sea Eagle. I'll post a link to it below. I've never seen one in action(other than the advertisement video). However, it seems pretty stable with ability to stand and roomy enough for some extra gear. This may be the best of both worlds!!!

http://www.seaeagle.com/FramelessPontoonBoats.aspx

let me know whatcha think.

Chuck