I live in south carolina and I am wanting to put a trolling motor on my canoe. I need some advise on the thrust to get and what size or type of battery. I have been looking at a minn kota 30lb and a 46lb thrust. My canoe is 14 guide type and I will be fishing both rivers and lakes (rivers here are fairly slow).

Any help would be great. Thanks in advance.

I have a 14 foot old town osprey canoe and use a 30lb minn kota.  With the 30Ib it works great you would have plenty of power.   I wish it was a little bit slower at the lowest speed.  I think the 46Ib will have a longer shaft, so either the Handle will be higher or the prop will be lower in the water.  I also use a 46 Ib bow mount on my bass boat which weighs almost 20 times as much as my canoe.

I would get a deep cycle battery with a lot of amp hours.  I have used a couple of brands of 24M size lead acid batteries and if I have used it heavy like 4 to 5 hours with a fish finder it would drain it below 9 volts.  I would get a larger battery like a 27M size lead acid or an Optima battery.
NAFC Lifetime Club Member, BASS Member

Beware Of the High thrust. Any unintentional control input may result in wet gear, if you get my drift.

Thanks for the input guys. Didn't think I was gonna get a response. Going to get the motor and battery in a few minutes.

hello just wondering how the motor is working..  i have a 14 ft flat bottom aluminum boat and looking for a motor soon. let me know if you have enough power with what you bought..  thank you.

I live in Iowa and canoe fishing is right up my alley. I actually have three trolling motors and two canoes. I think anything over 36 ft-lbs thrust will do fine for you. My first canoe is a small 12 foot fiberlite that has a really old sears trolling motor (est 18 footpounds).that works fairly well on small lakes but doesn't have the "umpf" to go upstream in the "Wapsi". I have a Macinaw 15-6 canoe with a Mintonka 36 lb thrust that takes me almost anywhere I want to go. It runs about 2 hours on nearly full throttle, and all day just putzing around..Last winter I bought a "basket case" 1-1/2 hp Tanaka Togyo (circa 1972) jus t for fun, and I useit  now for going upstream and I use my Mintonka the rest of the time. 

just an update for those inteested, i bought a 36 lb thrust minn kota endura ( thanx for the advise dougmacpherson). picked up a everstart 12v marine 125 amphour battery from wall mart for $70. that motor made my canoe leave a wake behind me. took it out to lake murray today, was out for about 5 hours had the motor on for at least 4 of those 5 hours and got home the battery still had 85% charge left. very pleased. I got to spots the big boats couldn't . I caught 14 bass between 3 and 5 pounds. great day,
May your days on the water prove to be safe and fruitful.