Canoe gets my vote as well, old town makes great canoes i have put a lot of miles in on a old town 168 they are wide, good seats, and a nice snap in third seat if you have kids to take with you, they are also one of the better tracking boats, other good boats to look at are Buffalo and Osage.
You may check Silverhill canoe rental they use buffalo canoes and usually retire a few boats every year, The ones we have got off them weren't in that bad of shape and it may save you a couple of bucks.
http://silverhillcanoe.com/Home_Page.php