I currently have a Wenonah Spirit II Royalex canoe. I use a side mounted 45 lb. thrust trolling motor along with stabilizers when fishing. Would there be any concern using the same setup on a Northstar B16 with BlackLite layup? With the B16 being so much lighter and thinner than Royalex, will the trolling motor cause too much stress on the B16?

That sounds like a question to ask Northstar for the correct answer.

I seriously doubt a trolling motor could structurally compromise a canoe in the way you’re thinking. If it’s just pushing against water, there’s no way it could produce enough torque to break the gunwales or anything. Maybe don’t throttle up to 100% immediately. That’d be the limit of my concerns, but to be safe there’s no reason not to call and ask.

I hate to be that guy... But...Why use a trolling motor on a kevlar canoe, unless needed for medical reasons this makes very little sense to me?

Maybe because it makes it easier to get across a body of water, just as a kevlar canoe is easier to get across a portage.

Maybe because he doesn't want to haul two canoes on a trip but wants to do a bit of paddling & portaging--as well as fishing a good-sized lake with trolling motor.

If I were going to use any type of motor on that canoe; my concern would be what might happen at the attachment point of the motor, if the motor comes into contact with a boulder, or the lake/river bottom???

While the layup of that canoe is strong; I don't think that canoe was designed to be used with a motor.
It's your boat; you could mount a sail, an outboard motor, or turn it into a paddle wheeler if you wanted too. You pay the possible natural consequences of anything that goes wrong............

BOB

or turn it into a paddle wheeler if you wanted too...