as you know mate you cant work with what isn’t there i had a few year nothing but culls after having descent got me white dog me red bitch hoping one would be decent by 14 month old i’d knew i had 2 real uns knew with me dog by 6 month old lol ive bred them only one keeper from the 2 i kept ill be honest if your breeding yourself trying to get top class and want a top dog every season. none can do that i would say why marcus kipper etc do what they do well thats my take mate you may have different