No winching
Spinlock says the Powercleats are for hand tensioned lines only, no winching. The winch is beside the cleat, so it wouldn't work well if you tried.I don't know how strong the plate is that holds the existing horn cleat. The load is horizontal and close to the deck, so you have a shear load on 1/4" bolts. The breaking strength of the Powercleat itself is 880 pounds. Maybe that's actually less than the bolts and backing plate.I do know that some H260 owners have done this and been OK, and their jibs are bigger than the one on my H23.5, so I figure I'm more OK then they are! ;-)Since it's so quick and easy to work the sheets when tacking, you should always be able to cleat the sheet before it goes out too far, requiring winching to get it back in. If you later let it out and need to haul it back in, well, I haven't had my boat long enough to know if a winch is required or not or if I'll always be able to do it my hand.The PX cleats are similar to the clutches in that you can just pull on the cleated line to harden it without having to first release it. However, to ease the sheet you have to release it. I suppose you could have such a load on the jib that the sheet would be pulled through your hands when you released the PX cleat to _ease_ the sheet. I don't know yet.I guess one solution would be to head up momentarily to ease the load so it could be trimmed more easily.I spent many days this summer just sitting in the boat in the marina wishing I had crew on perfectly fine sailing days. No longer! I can single-hand the boat now (I have a furler on the jib).