have a pic but can't post. easy to describe

1:1 would have sheet running through swivel and tying off on traveller car

2:1 would have sheet running through swivel to traveller car and then back to center of rear beam

3:1 would have sheet running through swivel to traveller car, back to block mounted at center of rear beam, then back to traveller car

am also hoping that 3:1 will allow me to pull main in about another inch for going to weather better

as someone pointed out in this video from 1:35 to 1:53 the main isn't centering well even when fully pulled in with just 2:1

http://www.vimeo.com/5075989

ahhhh, so pretty much everything uses 2:1...hhhmmm..........