The Good Rigging Control System created by Greg Good (GRCS for short) is an essential tool for any professional tree crew working with large timber. When using the winch, the GRCS helps with lifting downed limbs and trunk sections - especially helpful on storm cleanup jobs - thanks to the Harken winch adding serious lifting power to your crew. The GRCS is the ultimate lowering tool for bringing down heavy wood with control, and shines when working on a site which must be preserved from damage