I have a 14' old town widewater. I use a portable downrigger that I bought on ebay for about $40. The key is to counterbalance the other side. Since I only use a 4 pound cannonball, I have found that by sidemounting the trolling motor on one side and the downrigger on the other, the balance is right. you can shift the battery a little to get it even. If you are just paddling, a bag on sand pushed more to one side will help. Finally, if you put the battery or sand closer to the front of the canoe you will get a flatter ride.