Jerry - I can see where people could premount for doves & ducks (not sure successfully) but upland hunters... I guide at a private club in MO & see new shooters on occasion walk up behind my dogs with premounted guns. We stop action right there as it would be easy to step in a hole & shoot nothing but my dogs or another hunter. Most of them adjust to unmounted gun & have some success before the hunt is over. On their next trip they are prepared & have much greater success.