Shut-off switch for rear lights

I am considering installing a switch to have the ability to turn off the rear tail lights. There are times, when in the woods hunting, that I would prefer to not have them on. I am sure I can trace the wiring, and figure a place to break into it to install a switch. I am wondering if anyone else has tried this, and may have any suggestions on where/how to mount the switch.

2012 Sportsman 500 HO LE