[Storm]

Firstly the dog can be lured into a position then the dog will be required to do the action in anticipation of the reward, irrespective of where it pops out from. Positions can be reinfoced by food for instance but a balance must be reached at the relevant stage relevant to the dog where a little persuasion may be required and reinforced with a positive, so although reinforced with compulsion the correct behavior is followed by reinforcing with a "positive" method.