Student deployment methods in Safety and Training May 7, 2001 Just to add to Mike's posting ...Double-sided BOCs are available on Student Dolphin, Javelin, Reflex and Telesis rigs. Double-sided BOCs have an extra handle on the lower left corner of the container. When an instructor pulls the extra handle, the left and top edges of the BOC open, allowing the pilotchute to fall out, catch air, etc. This feature comes in handy when a lone instructor finds himself docked on the student's left side as they approach the "hard deck" and the student cannot be bothered to pull.This spring I converted all 16 Telesis student rigs - at Perris Valley Skydiving School from main ripcords to double-sided BOC. Rigging Innovations supplied the parts.Hand-deploy pilotchutes for students are an old idea that originated in Georgia or Tennessee in the late 1970s. USPA squashed that idea, so it moved North. Gananoque, Ontario, Canada started dropping students with throwout pilotchutes back in 1979. By the mid-1980s most Canadian DZs had converted to throw-outs on all their student rigs. this made life easier for the packers, because they packed exactly the same way whether a student was planning to do an IAD jump from 3,000' or a PFF from 10,000'. Throw-outs also reduced the workload for riggers and aircraft mechanics.Americans did not clue in until the late 1990s, now they are converting to throw-outs in a hurry. Sometimes it is amusing to watch the political machinations within USPA.As for which system has a technical advantage ... we can argue this until the cows come home. Both systems have their advantages and disadvantages. In my opinion, the only advantage of main ripcords is that you can install a pin-puller AAD on the main container, but this creates another series of head aches and they are not compatible with extra instructor handles.In conclusion, USPA DZs are following the Canadian lead - in converting their students to BOC throw-outs - because it makes life easier for everyone involved.