Harken recommends equipping asymmetric/code zero furling systems with lead blocks for safe furling from the cockpit. Lightweight, UV-stabilized Carbo blocks run exclusively on ball bearings for fast trimming under any load.

Two stanchion leads forward guide line outboard to keep sidedecks clear. A stanchion lead aft features a double Harken Cam-Matic for cleating continuous furling line. A Carbo T2 block with shockcord attaches aft of the double cam to keep line in place for easy access.