i dont know how a troller would perform mounted on the back of a toon but id mount it on the front. id think it would be easier to pull a toon than push it, especially if theres any wind to contend with. unless you plan on fishing off the very front when you use it, id also get one with a remote control like the power drives or auto pilot that lets you control the boat without having to be at the front of the boat like youd have to do with a foot control unit.
listen with your eyes---its the only way to beleive what you hear...