I set up single line reefing for first and second reef points. I have a Z-Spar mast
and boom, which has some of the sheaves at each end of the boom. But I had to add a couple cheek blocks to the boom and mast to set it up, as well as some fairleads to support lines on the boom.
There are several turns to get it all in and then it runs down to some stand up blocks on deck
and back to some cam cleats
in the cockpit.
Also you'll need an outhaul
for each reef point which complicates the boom even more. I have two sets of 5:1 purchase
blocks inside the boom which was real fun trying to get set up w/o hang ups.
All this requires a lot of line. Mine is 5/16 & 3/8", so it needs to be well organized. And you'll want to test run it in light air (get the bugs out) before you put it to the test.
On the first and second reef you'll want to run a strap/line around the boom from each clew to keep the clew close to the boom. The outhaul
will just allow the clew to pull away from the centerline of the boom.
Mine is a loose footed mainsail
and I have storable lazyjacks to add to the mess. But it all works.