For an even more efficient use of the line do this to create an 80 foot halyard with 25 feet of taper (F18 or N20).

Take 55 feet of 3/16" EnduraBraid.
Open the cover and pull the core out 18 inches from the end.
Milk the entire cover back 25 feet.
Taper the 18" of cover and insert back into the core, and lockstitch in place.

Now you've got an 80 foot halyard with 25' of taper at the top, 35' of rope/core in the middle, and 25' of cover only on the retrieval section.

Works like a charm.

-Mike