Endless Comealong:
You can use one Monster RopeTie to pull or hoist a heavy load with 3/1 leverage (60% efficiency factor resulting from friction at the clam cleat reduces effective leverage to 1.8X). Using a primary lifeline that is permanently attached with a prussic knot you can use this configuration for pulling a disabled or injuried climber.
The prussic knots can slide when not under tension and the primary lifeline insures against the possibility of failure on the secondary system (the RopeTie is not rated for primary lifesaving loads). Additional leverage can be obtained by adding a second Ropetie as shown in the Modular Feature illustration.