I will attempt to do this in words:



Small bowline in the Clew of the Mainsail

Through eyelet at end of boom, back towards bow

Through cleat on boom, continuing towards bow

Around mast, back towards stern

Through aft thimble, back towards bow

Through forward thimble, let remainder hang



This system gives you a 3:1 on outhaul and helps (in addition to vang) keep your boom from dislodging from the gooseneck in the event of a capsize (and there will be many!). It helps to put a large loop in the remainder of the line, just pull to tighten outhaul and when you are done just let the rest hang. When you want to release outhaul, grab the whole purchase system and yank out of the cleat.



Unfortunatly I had the experience while on my college team of saling those retched boats. Get ready to be exhausted, bruised, and soaked...



Hope that helps.