Van Dyk has volunteered for Habitat for Humanity and the Montana Wildlife Federation.
He is a member of the Montana Bowhunters Association, the Montana Conservation Voters, the Rocky Mountain Elk Foundation, and the National Rifle Association of America.
[1][2] Van Dyk has worked as the Western Energy Coordinator for Trout Unlimited, a field organizer for the Northern Plains Resource Council, and as a ranch hand at Spring Creek Farms.
[2] Van Dyk served as chairman of the Fish, Wildlife and Parks Committee in the Montana House of Representatives.
He is the author of the most recent update to the Montana Stream Access Law, an Act of the 2009 session giving the public the right to access Montana rivers and streams from public bridges.