I preferto huntright at or shortly aftersunset.I figure most predators are nocturnal and at that time of day they have gone a few hours without food so they will be more willing to respond.Right after dark is a good time if night hunting is legal. If night hunting I like a low powered red light (2 cell flashlight w/red lens) for spotting eyes, and a bright spotlight for the actual shot (you have to shoot quickly, they will usually be "stunned" by the bright light for a few seconds, thenrecover and run). I don't have any real experience with coyotes (but hope to before this winter is over) but with a fox usually they will respond within just a few minutes. If nothing shows up after 15-20 minutes I usually move on.