Re: Stackpacks, Lazyjacks, and Mainsail Facts!
I saw a lazy jack system where the lazy jacks went through blocks on the spreaders (flag halyard block was replaced with a double block to take lazy jack and flag halyard). this kept the lazy jacks from chafing the sail. The lazy jack lines went under the boom and back up the other side so when slacked off (with boom supported by topping lift or boom gallows) a regular sail cover could be installed. Cost = 2 double blocks (or just mount a single next to the single flag halyard block), and enough line to make the lazy jacks. My boat has a "jiffy reef" reefing system and I use the hooks on the boom when making up my lowered sail, a length of 1/4" line running back and forth the length of the boom then pulled tight....nice neat and cheap.