Ok, my boat is MUCH smaller than your folks at 25 feet.
I've considered ST winches for it... I solo sail a lot (even race solo some times)...
I cross sheet even as the winds come up so that I can just grab the sheet, sweat it, and take up the slack. Because of this though my elbow is a mess, but that's another story.
The statement that you need 3 wraps to use the ST function bothers me... I am assuming I can continue to use them as I describe (without the ST function)... but if I want more on them and wanna spare my elbow, I'd need to wrap the leeward side 3 times?
This is my typical "cross sheeting" in action. From the helmsman position, I lean back and pull in the center. Obviously none of this was necessary during THIS sail (6mph winds)... but I've used it successfully solo sailing to 25 knots with the 155 up.