Alan,

Basically what you want to do is fasten the jib halyard to the bridle so that when you get the mast up, you can tighten the halyard and it holds up the mast. The 8' piece of rope is just to extend the halyard since it isn't long enough to reach the bridle. Make sure your shrouds and trapeze wires are not going to catch on anything before you start to raise the mast.

Howard