ain't nobody got it figured out and probably wont ....... culling doesn't further a line of dogs ......its knowing the dogs you have inside and out with several years of breeding and raising the same dogs you will get a feel for what you need to do to further what you want ...
I agree with you Larry...line breeding and inbreeding does not produce great dogs...it is the person or persons making the breeding's and decisions that ultimately make the difference one way or the other...
having an eye and feel for the dogs and knowing what a great dog is produces good to great dogs...
see the truth and not make excuses for the dogs...great dogs don't have bad days...some days better than others...yes...
a name for not seeing the truth is called kennel blindness...there are two extremes...one is that the dogs are perfect and don't need improvement...and those that are never satisfied even with great dogs and will even get rid of great dogs in pursuit of better and they could just as easily wind up with less...