Cowboy Drifters » Wyoming Fly Fishing Guides Go back to directory. Add to Address Book. Cowboy Drifters Cowboy Drifters Work 18187 Wyoming 220 Casper wyoming 82604 work Work Phone: 307.331.2031work Website: Website Categories: Fremont Canyon, Grey Reef, Miracle Mile, Wyoming Fly Fishing Guides Updated 9 years ago.