I am not saying it can not happen but i will say i have never seen a successful program based on continuous outcrossing. now dont get me wrong i am not saying that you need to inbreed the shit out of these dogs i am saying the exact opposite. But i am saying that line breeding which when you get down to it is inbreeding and only animal breeders differentiate between the two is a successful tool when you are trying to lock in traits.

another form of breeding that some have tried is assortative breeding which is breeding like traits to like traits regardless of relation. this can work but again it can only take you so far say for instance you have a stifle dog and breed him to another stifle dog yes they have the same trait but it was not the same combination of genes that created it.

Breeding is called an art for a reason because it is part science and part intuition. Like EWO said half the battle is having the experience to know which animals to select to create the next generation.