I always wave, and this Sunday, someone frantically waved back using both arms. I eased over to the other boat and quickly discovered his mainsail was jammed in the track about halfway up the mast. I dropped my sails, looked at the track and discovered that one of the slides was badly distorted and jammed. I handed him a can of WD-40 with an extended nozzle tube, told him to climb on the boom and see if he could spray the defective slide, which he did. A couple tugs on the halyard and the slide was free enough to allow the sail to be lowered all the way. He thanked me, I raised the sails and continued my trip north.
Sometimes that wave is more than a gesture of friendship,