Free: Contests & Raffles.
I have a Lab from Hightest Retrievers out of California and could not be more pleased. My dog is 7 now and came from a long line of FT champs and hunt champs. I would look really hard at the blood line on both sides before purchase. I would also visit the kennel and training facility before purchase as well. I have never had any issues with him. His eyes are great and his hips are in great shape...never a problem there. Even though Labs can be natural retrievers I had my dog force fetch trained and I will do that with any Lab I purchase from now on..... it was money well spent IMO. I have most of the books you have mentioned and all have great ideas that can be used.
I know all the breeders you mentioned in the OP and all are good and work together to find what you want if they don't have it available. I've had three RattlinRidge dogs and love hunting and competing with them. I refer people to Lee and the Meyers also. There are good trainers in WA and OR, it all depends on where you're located, but the ones mentioned above have all had success. Your breeder will have a better idea of which pro they feel is best for their lines.
Is there and EntryExpress for Canadian Trials and Hunt Tests???