Several years ago i had a 12 foot 2-man fiberglass bass boat that i wanted to put on the arkansas river. altho it was pretty decent for its size, in rough water it was dangerous. my fishing buddy at the time weighed over 250. it doesn't take a genius to imagine what that boat looked like with both of us in it. it rode low in the water. i got to thinking about how to improve that problem. i went to the local plumbing store and bought two 10 foot sections of 10 inch pvc. i also bought 4 caps to cap the ends. i capped the ends and then glued them to the boat at the water line. the rtv did a good job of holding them in place with no problems. after taking the boat out on its maiden run after installing the pipe, i had to do something about the water that the flat end of the pcv plowed while under way. i went to wally world and got a couple of cheap funnels and glued them on - that made it much more hydro-dynamic. the difference in flotation and stability was incredible. it made the boat able to go on much rougher water than before. as a matter of fact, i caught my biggest cat on the arkansas using that boat. a few months down the road i sold the 2-man and bought a 14 foot jon boat. i performed the same operation on it. a little harder to fasten the pipe to it, as the jon boat is curved. i used big hose clamps to hold it front and back, then applied some rtv down the center. it made such an improvement in stability. i thought about this as i was reading about a couple of 10 boats here. it is cheap, and VERY effective. a couple of tips if you consider doing this. first, it makes a pretty boat ugly, and an ugly boat uglier. second, don't get carried away when you put them on as you may have to reposition them for optimum effect. too much adhesive on first effort makes it hard to move them. also, don't make the mistake i did of using too small a diameter of pvc. i started with 6 inch and it wasn't enough.