Off topic, but there is a website called TexasKayakHunters or something like that. Lots of pics and advice about duck hunting from a kayak. I have a couple of kayaks and have tried hunting from them. Biggest issue is lack of stability if you are not shooting along the axis of the boat. Turn sideways to shoot and you will roll that sucker. Mine are short, light, portable (10 feet, about 35 pounds), but a bigger kayak is probably more stable. Hobie (as in Hobie Cat) makes a kayak already tricked out for duck hunting.
Wear a PFD.
