Watermark's Shadow is the 2020 High Point Derby Dog and this video shows how he was developed using Bill Hillmann's approach to training a puppy as shown in "Training a Retriever Puppy," a five hour video chocked full of LOTs of great training information. This youtube clip includes a view of Shadow's training at 16 weeks, and what he was doing then.
AKC Retriever Field Trial Accomplishments of Bill Hillmann: https://youtu.be/OB95Dg2sSJY
Videos: http://hawkeyemedia.net
Blog: http://billhillmann.net