Ben , I have a coleman 4.5 m canoe that fishes 2 people , have a 28 lb MinKota on back whick is more than enough for the job . On speed number 1 it is the perfect trolling speed for lures, speed 5 is good for getting from a-b ( very qiuck walking speed ) Hopefully this helps .
Also suggest going for the salt water version if you can stretch the budget , I mainly use mine in the fresh chasin Bass but it is also good to have the salt water as a option .
Regards
Paul