It looks like your rig is made of wood, an I correct? Do you have any metal working ability? If you could put a piece of square tubing under your seat, you could build 2 mounts, one for the hog, one for the collective and swapping would be a matter of sliding them in and out of the tube, a nut with a hand knob could hold it
Sent from my SM-G930W8 using Tapatalk