Macca,
Maybe this can help.
If you have a spare autoratchet, then place it to the rear of the upper mainsheet block and have the line wrap around that instead of around the upper block. You will leave one sheave unused on the upper block but it really increases your holding power ALOT. It has to be an autoratchet as it has the disengage for quick sheeting out. The ratchet block can be put on the boom using something like an eyestrap as one block doesn't put too much tension on the light booms we are all using now.
It may not be a perfect setup when the mainsheet setup is twisted but when faced with bad chooses you best go with the least bad.
Good luck !
Wouter
STEVE is the one with the mainsheet problem, not me. I know I am in your thoughts a lot these days so I understand <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />
But the boat Steve is using has the NACRA Infusion system, so its a 10:1 with a tapered Maffioli sheet. The tapering greatly reduces the drag/grip in the system and would make it pretty hard to hang onto with one hand (I know cause I sailed that boat in the Lock Ness Monster Race last August)
I would suggest running a non tapered sheet to improve the grip in the system, or shortening the tapered section so that there is more of the fat sheet in the blocks at full tension.
