Own a newer Can-am with LinQ system, use this:
Gun boot rack
Kolpin Gun Boot
Sample picture of how it sits on the Can-am:
Sample Pic
With the rack, it can be configured to ride either left or right side, very secure. The Kolpin Gun boot is *almost* 100% waterproof.
EDIT: I should've mentioned that I can install / take off this system in a matter of seconds (literally) and then the quad is 100% stock.
J.