It can be done! I arrowed two coyotes this last fall that were called in, from the ground, no blind, in the day time! I' d also recomend double teaming them. One person sets up for a shot, try to look at the surrounding area and often you can almost guess where the coyote will most likely come in at, then set up the caller away from the shooter, the more distance the better, but it helps if the caller can see the shooter so that he can communicate with him. Having the shooter away from the caller helps alot, because the coyotes are very good at pinpointing the source of the sound, so the callers job is to keep the coyotes attention so that the shooter can get drawn. Also, if there is some ground clutter such as bushes, trees, tall weeds in the area, this helps the shooter have opportunites to get drawn without being seen. Obviously, using an electronic call would also work like having the second person doing the calling, BUT, I firmly beleive that a person, with good calling skills, can work a coyote in much better by being able to only call when it' s need and to vary the volume as needed. I used mech. broadheads from a 70# bow, 80% letoff. I' ve never hunted them at night, so can' t comment on that aspect of it. Calling coyotes is not hard, but calling them and getting them with a bow is in a league of its own. Good Luck!