I am really leaning toward the idea of the front of the drivers seat, seems like a neat idea. If I end up getting a plate profile cut I will chuck up the CAD file for anyone else who wants one.
I have mine mounted there, made up a bracket that comes off the seat bolts, looks stealth. Unfortunately the way I made it, the seat only goes forward enough for me. Lately had a few occasions where mates needed to move it and being manual they had trouble with the HD clutch
Thinking about moving it to the pass side mounted to the adjustment lever so it moves with the seat.
Be interested to see what you come up with anyway. Let me know if you want a pic of mine