Well, i don't know much about canopys, but i do know if u stuff a boat @ 70 ..its brutal.
I did it, in a open 33 pleasure boat.
Threw me out of the front seat , feet got hooked to the steering wheel and my back is still bad today. Boat damage, actually not to bad for a PP ( 1990 model), deck opend up in front and front bulkhead broke loose.
Other then that ,,cockpit stayed dry even though i was completley under water ( seen video ,that somebody actually made while it happend ) .
Boat still running strong today!!!!
This pic, is after it was fixed, thats the reason i made the back of the seat higher !!!!!