Bicycle carrier front of truck or pin box. (Updated W/pics)

I built a pin box mount and can carry 3 full size bikes there, completely out of the way and no bouncing. I back the truck near the bike rack, set the bikes in the truck bed, use my "man step" to step up in the bed, and set the bikes on the rack. Works great.

Considered a front mount but did not try it. Not because of air flow concerns, just did not want something sticking 3' in front of the truck. Unless you used bike covers I don't think there would be much impact on air flow.