90 minutes. Lohman presents its newly revised “Hunting Retriever Training” video. Host Jack Nelson, assisted by Doug Greiner have more than 50 years of retriever training experience and Jack has 25 years of waterfowl hunting experience. Their award-winning retrievers have competed successfully at every level. Comprehensive training aid. Teach your dog single, double, triple retrieves and blind retrieves. Advanced handling, force-breaking and electronic collar training techniques - a must for all dogs.