Oh, and BTW, my current airshow rig is: Nikon F5 w/ Nikkor 300 f4 + Tamron SP AF 1.4x on one shoulder, Nikon F80 + Nikkor 80-200 f/2.8 on the other shoulder, both with UpStraps. The F5 gets used for 95% of the shots, the other one for the odd wider shot