Re: [GreenMachine] Freebags
direct bags provide the quickest openings (for an already packed canopy) that are possible. The lowest jumps that I know of using the DB system is 95 feet over ground. water towers are commonly jumped using direct bags, or at least used to be.
the sleeve is a variation on the direct bag and is used in the Sorcerer rig. however, the sleeve was used for a period with base rigs but they turned out to cause a number of problems. there were a number of major accidents associated with extraction of the long bag from a base rig.