-- Last Updated: May-21-12 3:08 PM EST --
They're probably ok, but one thing I don't like about the rotomolded boards is the weight. It seems to me that you're loosing one of the advantages of a board if it weighs as much as a plastic kayak.
But there are lots of ways to have fun. I've poled and "paddled" my canoe with a homemade pole while standing up, and just ordered a SUP paddle for use in the canoe.
Paddler's Truck Rack
Kayak & Canoe Outriggers