We came up with a simple, bullet proof method of locking the wings down for flight. It consists of a bolt, threaded down onto the locking pin. With this bolt in place, it is impossible for it to move. The bolt will be easy to install through the movable door on the top of the wing.
We operated the wing with only one bolt in place to show that it would have no effect on the system if they were in place and the switch was accidentally flipped. With both bolts in place, the pump simply won't run.
www.youtube.com/watch?v=PBHtu2Se3LQ