I'll throw another vote out there for the Nucanoe. It's made for the type of water you're describing. I have the 12 footer and like it quite a bit. Very stable boat - I take my two boys, ages 3 and 7, out in it all the time with no worries even though they're leaning over the side, bouncing around, etc. Easy enough to paddle, but you can also throw an electric motor on the back if you wish. There are also a lot of great accessories available, so you can customize it into a serious fishing rig.

The only downside is that Nucanoes are a bit heavy. Mine weighs 80+ lbs. I built a dolly to wheel it around, but car-topping it can be a challenge. It's worth a look though.