Having recently purchased a h22 I have a question concerning the three internal lines in the boom. The previous owner is no help and we do not have a manual with the boat. I can't seem to figure out what they are all used for. One is for the out haul, and I believe one is for the slab reefing. The out haul runs through the boom and fastens to a cleat on the underside near the mast. The other two lines run through the boom exiting at both ends. The ends near the boom have cam cleats while at the outer end of the boom the lines run around a pair of sheaves (sp?) I have rigged one of the lines to work with the reefing, but the third remains a mystery. Any help would be appreciated. Thanx in advance, Gary Guisinger