air cooled 2 stroke outboards

Do you or some one you know us one of the 1.2hp or up to a 3hp air cooled outboards , like a tanaka/gamefisher? I'm not happy with the trolling motor I have and think that one of these would work out nicely. That and the fact that they weigh around 15lbs which is a lot less than the battery that goes with a trolling motor. I'm wondering how good of a job they do pushing the boat around, aprox. speed stuff like that. This is what I'm talking about http://cgi.ebay.com/ebaymotors/Sears-1- ... enameZWDVW