My thought for this has been a 5k type event.
Always moving with hunting gear on you. Pack weight = probably 25-30#. Something reasonable.
At mile 1, you "spot" game. Have a 3D target stashed somewhere in a field with very little exposed. A couple tines. An ear. You glass, find it, report a location/bearing/distance and move on.
At mile 2 you stalk. Idk how to simulate this.
At mile 3 you shoot and get the option to drag or pack a weight to finish.