Sounds like my North gennaker. The collar goes around the
furler or forestay, you then have a tack
line that can be set at a certain length, then attached to the bow, OR you run a
line thru a pulley as I have done at the
anchor fitting and run it back to the cabn top, so I can adjust the tack ht as I am sailing.
The other scoop, with the neverending
line, I am thinkng is what pulls the sock up, but I could be wrong on all of these things too.
marty