My concern about opening them as you suggest is that they act as air brakes or flaps. Wouldn't that add major drag? By opening them to the outer sides, they may cause minor disturbance in the yaw axis, but that's decreased by the give/sway of the door that would swing inward during the turn. If they are light enough, the Telemaster most likely won't even know they exist. As soon as the LHS opens back up I will get the supplies to make the boxes. I want to start a pictoral follow-up on this thread.