Hmmm, in this day of ultralight racer/cruisers..or just racer/"cruiser in name only" boats, perhaps worrying about whether that man's rig can take 4k from the masthead iis a valid point, but in "the old days" when i started messing around with this stuff, if you couldn't pull a boat over by throwing a line to the masthead, that rig had no business being on a blue water boat. My current rig was expressly designed to take a full roll and not lose the sticks...and yes, I sleep better because of it.
on the ultra low bridges point, seems to me there is a particularly notorious bridge on the French Canal system that just happens to be adjacent to a popular pub. Apparently if there is any question of clearance, a pop off the boat and into the pub, and probably a round for the house, will result in formidable aditional ballast on the hoof , as it were, sufficient to sink the boat a few more inches and thereby clear the bridge
after which, a quick return to the pub to celebrate is usually in order