I have been breeding tight for generations occasionaly making a outcross. It works for me for consistancy. The bottum line, whether u linebreed, inbreed, or outcross, u still have to cull if u want to improve on what u have. If there was a proven way of breeding, we all would have top dogs by now.
Here is the result of a 14 mo. old plott I have. He coldtrails & is extremely gritty. Unless he learns to back up, he will not live long. His mother is a uncle to neice cross, bred back to her father.
Bayou Cajun Boss
