I've looked at one that fits on the motor shaft. It wouldn't require the additional clearance under the motor. I just use a motor on my canoe but I have had problems with wind spinning me around and hoped this might help. I haven't actually pulled the trigger on buying it, as I never did take the canoe out with a motor last year.
https://bullnoseproducts.com/order-produ...ose-rudder
I am not affiliated with this vendor or website in any way.
https://bullnoseproducts.com/order-produ...ose-rudder
I am not affiliated with this vendor or website in any way.