Buy a small river canoe instead......
Can be filled with airbags and whitewatered but you can also do a week trip in one...... say float and bloat down the Green River in the Utah canyon lands or spend a week in the Boundary Waters Canoe Area in the Minn/Canada border, hunt/fish out of it......... You should try a Kayak before you buy one.... 1 man boat so you'll need friends who kayak too. Not a very versatile toy. Head to your local REI http://www.rei.com/ and check both out..... or schedule a tour.
My doctor gave me six months to live, but when I couldn't pay the bill he gave me six months more.