This is just me, but unless the critter is quartering to me I haven't found a reason yet to punch the shoulders. Lots of meat loss, and those fronts make for excellent burger. As well, I've see plenty of critters take a hike after being hit in one or two front's anyway. The idea that a shoulder hit always takes them to the turf is far from what I've seen...

Dober

"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy