We can't thank you enough for all your help and support during the clinic we attended. I think we learned more in two days with you then in the three years with an English trainer and one year with a natural horsemanship trainer. Thanks for being a true cowboy and helping us "tender-foots" out so much!
Jay & Linda

Thanks for giving me the tools I needed to become comfortable with most of what my horse "T.J."
has to throw at me! I'm looking forward to future clinics.
Joan & T.J.

For my 48 th birthday, I bought a young horse from Dennie that he had bred and trained. Not a day goes by that I don't appreciate the foundation and mind that Dennie put on "Junior". Thanks Dennie! "Junior" is the horse of my dreams.
Lisa Brunet

Slightly skeptical, I did a trail clinic with Dennie. It took us two hours to travel a half mile and in one half mile I learned more useful riding tools than I had in a years worth of arena instruction. You want to improve your horses arena performance, go trail riding with Dennie!
Mia Yellin

I was given an untrained horse by my brother-in-law. After nine months of Natural Horsemanship ground work, which we both needed, I was impatient to have her trained to be ridden. That was going to be the challenge, Cheyenne had such a bad reputation at the Ranch where she was boarded, no one wanted to ride her. She would rear straight up in the air to see if I would run and my first time alone with her in the round pen she charged me. Luckily I saw through her and didn't flinch or the game would have been over. She not only pushed around her owner, my brother in law, but had been taken out of pasture since no one wanted her in with their horses. I finally asked the Rancher for a recommendation and she remembered a working cowboy who might be available. That's how I was introduced to Denton Cook. Dennie came in on Fridays and Saturdays and in short order was out riding Cheyenne in the hills. Every time I am out on the trail with her I thank Dennie for all the good work he did because she is the quietest trail horse around. 
Nicole Vernon
2009 San Ramon Valley Horsemen's Association President