Bob, if your toerail is slotted
put a turning block on it and run the preventer back to a cockpit cleat. ( assuming a mid-boom connection) On my 37 I just used a a $3 shackle (sp?) intead of a block, figuring there is no friction on the line then it runs through the block/shackle on controlled jibes. I wanted the line led aft since I didn't want to be on the deck setting up the preventer after a controlled jibe. If you're using a preventer then you are in big following wind/waves and should minimize "deck" time while enjoying the ride. Scott