Inbreeding has it's place, but I am a firm believer that you need excellent stock to inbreed with, otherwise you will just make a mess, or worse yet, set in health problems or bad traits in the line. A heavily inbred dog will also tell you what your strengths and weakness are in your line. Outcross breedings have their problems too, I have found that in the canine breeding world that there isn't much truth about the stock you are working with, and unless you have been breeding for a long time and have many generations behind you, you really have no idea what you have just bred. My ideal situation would be to have a very large kennel and know everything about each dog and several generations prior, then do a tight line breeding, or an inbreeding on occasion if the dogs prove to be worthy of such. Then have a separate line to outcross within my own kennel. The key is to know all about every dog you are working with, because you can never trust the other breeder to be honest, at least that is my opinion.