Not an issue, even @ 40 mph (at that speed I'm always inclined to look up just to make sure! Bimini frame and canvas always strong! Pleasantly surprised every time!)
I've done 40 many times with it up, no problem. It slices the air pretty good. But it really bows if you are going fast into a strong headwind...
So, if you are heading into the wind, I would subtract the wind speed from 40 mph and call that your max speed. That is if it's significantly windy out (10 or more).
I would often run in the mid 40's with my old boat with the factory double bimini and never had any issues. My new boat has custom Sunbrella which is much tighter, and at 45 it is rock solid.
I have a dumb question. I always have my bimini in the up position with the boot on but obviously not opened. Is everyone referring to this or to actually having the bimini opened?
I've done 40 many times with it up, no problem. It slices the air pretty good. But it really bows if you are going fast into a strong headwind...
So, if you are heading into the wind, I would subtract the wind speed from 40 mph and call that your max speed. That is if it's significantly windy out (10 or more).