When bowhunting I always have a grunt call on me. Grunting can work anytime. I usually only grunt if I can see the buck in the distance and try to get him closer. Having eye contact lets me know if they buck is reacting to the call.
Elite bows, Vortex Binos, Trophy Taker sights, Carter releases, Goldtip Arrows. CBE sights, Vapor Trail Strings, B Stinger stabilizers