I agree they either have it or not. Blood lines and accolades speak volumes when it comes to a good gun dog. When I get an inquiry that is one of my first questions and when I evaluate the dog for training I ask them to show them to me as soon as it has all it shots and when they are still too young to begin training. Prey drive is number one in my book, If I don't see it right away I let the owner know that it may not work out well and give them some tips on how they might increase it and send them home to work on it. If when they bring the dog back at the prime training age and they show good drive I will take them in for training, if not I tell them it is probably not a good idea to continue and will give the dog one month with me and if does not develop while thay are with me I send them home. It's hard enough to train a gun dog and not worth the frustration to try and train one that has no drive. I'm too old to try and make miracles anymore.