I've got the stock mainsheet rigging on my Javelin, but it's in this funky configuration, and I just can't wrap my head around the blocks to the point that I can calculate my purchase. Can one of you rigging gurus make sense of this:
(I whipped it up in photoshop
I'm betting it gets me some mechanical advantage 2:1? 3:1? But I'd love to be able to cite a number when chatting with my sailing buddies, you know?