Somewhere in TRT, Lardy says that putting your hand down is a confirmation to the dog, you aren't giving him the line with your hand. Is this what you do? Is it different between marks and blinds?
How do you cue a dog he's running a mark vs a blind?
How precise is your initial line to the blind? It would seem to be helpful to adjust the dog's direction a few degrees, the hand would seem to be a less disruptive tool for fine tuning than moving the dog with shoulders and legs.