David that sucks on the miss, my coyote visits are like your, few and far between and screwing one up hurts.
Dozer I use deer carcasses and road kill for scraps, very seldom anything else.
Thumper, my son dinged a coyote we never found, a month later after the season ended he showed up on three legs. I had several videos of him after that. The following year he survived the dog runners one Saturday and Sunday and I shot him and his mate on consecutive nights.