Be sure to order some mallions too, so when you use it around a spar you can actually retrieve your rope. The mallion goes on the big ring, so when you set it up, you use the mallion if you are on a spar. That way the ring goes flat on the trunk, and the mallion sits the right way. I believe you use a delta one, iirc, I'll have to look. Another gem from Mr. Burnham, from some random thread a long time ago.