I had a rigor rabbit for a while and did not care for it. It just did not have the "rigor" i wanted...i returned it and went back to the old coonskin cap hanging in the brush.
Yours has the plastic can inside with the motor and spinning weight? That's what mine was and it just vibrated around without much real motion.
When placing a trail camera don't just look for a well used trail. What you want to do is look for a freshly used trail off by itself that goes from a north facing ridge, thick forest, brushy knob or some other similar bedding area to a food source. Don't forget water sources. Especially in the summer months the deer need water so look for a good trail going down too a creek surrounded by thick cover and place the camera 100 yards up from the water source.
Scent control is very important...