Page 161 - Peter Randall "The Craft of the Knot.."

GASKET COIL

Also called the Buntline Coil, the Gasket Coil is often used to tie off

excess line on a sailboat. Access to either end is not needed when
finishing this coil, which means that the line used in the last tuck can be
attached to the rigging.

STEP 1 After coiling the rope, pass one end several times around the
middle of the coil.

STEP 2 Pull a bight of the end through the top half of the coil and over
the top.

STEP 3 Pull the bight down to the middle and take out any slack.