The time frame to make the stalk may be right away if you determine there is wind blowing right as well as feel you’ve a shot at getting within range undetected. Furthermore you might well have to just watch them until conditions improve, they bed down, and or maybe the wind changes or gets stronger.
A regulator adjusts the amount of air entering the aid. A trigger in the handgrip controls the regulated air as it enters and passes the throttle valve. By squeezing the trigger, the throttle valve allows pressure air to enter the piston. Movement of the piston allows the port to open allowing the escape of air