Just started last year in late winter. I pulled in pairs of coyotes on 3 different stands with no shot and a single on one stand that I missed, couldn't see the cross hairs while shooting at eyes with red light. Last year I was using a Cass Creek caller and it worked fine. I have been out 4 different times this year and have not seen any eyes glowing in the dark??? I am thinking that it has not been cold enough and we haven't had snow cover to prevent them from catching mice as easily. We are hunting in pairs, one with a shotgun and one with a rifle, in case they hang up. We have rigged my scope mounted light onto a paint roller and rotate the light with a paint roller extension pole. I can't say that this is succesful b/c we have not shot any yet but it drastically reduces movement. You can scan with light just by spinning it with your fingers. I also made a homemade caller with a cheap MP3 player, an external amp and a powerhorn speaker with 30 feet of speaker wire. I also went to a Bushnell Firefly 3200. The reticle stays lit with one 2 minute charge for the entire night. We are hunting Stark, Portage, Tusc,Carrol & Harrison Counties. Good luck guys.