Dave has been with Pat Parelli since 1985. He has been involved with horses since grammar school and the late fifties. He was raised on an oil lease in the western side of the great San Joaquin Valley of California. Being far removed from any town, horses became his primary toys. As a boy he found himself helping the neighbors with problem horses, and was soon teaching kids from town how to ride.

It wasn’t until 1985 while starting colts and "fixing" problem horses that he met Pat Parelli at Bishop Mule Days. Certain that Pat was "holding out" on trade secrets, he was dared by Pat to come to a clinic to see for himself the worth of Natural Horsemanship.

By noon Dave knew there was something to this technique. He and Pat hit it off and the rest is history. In 1995 prior to the Star Ratings, Dave earned approved instructor status and 1997 saw him as Course Instructor.

Pat Parelli advanced Dave to 6 Star Master Instructor in September 2018.  As a 6 Star Master Instructor, Dave regularily spends quality time with Pat Parelli either at Pagosa Springs Colorado or Ocala Florida helping students, improving his skills and just enjoying his friendship with Pat.  As a Six Star Master Instructor Dave provides to Pat both horsemanship experience and specialized corporate skills.

David is approved to teach Pat’s programs from Level One through Level Four.  In addition he is approved to work with Young Horses, Difficult Horses, to start Colts, and conduct Cow Clinics and other specialty events as Cowboy Dressage, Ranch Versatility, Versatile Trail and many more.  In 2022 Pat awarded Dave Level 6 status meaning that he  respects Dave's abilities as a regional and national competitor.  In 2020 Dave finished fourth in the world at the World Championships of Cowboy Dressage in a special event called "Riding for the Brand".

Being a California boy, Dave is proud to be able to compete with and teach Traditional Californio Vaquero style horsemanship which lends itself to the newer Natural Horsemanship technics.