Greg,
I have both and I prefer the pontoon overall.The kayak is great to get from point a to point b then get out and wade fish but I do not really like fishing from the kayak.I have no problems fishing from the pontoon. The only thing that does hinder the pontoon is wind. Even with the anchor the wind can blow you around. I would try and borrow one and give it a try before you make the purchase. I hope this helps you some.
Jeff