Ahh ... you macho jet guys are all washed up with your ideas of gyros, powerboxes, back-up batteries, high-torque servos, s-bus, fancy 18 channel 2.4g $2000 radios, dual receivers, 12 channel receivers, and all that other crap. You don't need any of that stuff if you just stick with the basic control line method. Then, your only worry would be accidently letting go of the line or getting dizzy.