Have you tried dog bell's they work. Yes, it is hard to tell what they are running. Try running on small properties. Rabbit won't leave the area and you can see them if you use a cordless spotlight. It seems to me that at night you can hear the rabbit moving through the brush, then shoot it with the light. Little red eyes. Pretty cool.
Till our trails cross,
Wild Work
ORIGINAL: sosowingshooter
I run mine alot at night during the summer, to get em away from the heat a little bit. One problem with night runnin is the threat of coyotes, another being that it is tough to tell what they are actually running unless you can tell by the race.