He was in at least 2 other movies with Warren Oates, Two-Lane Blacktop (minor role) and Cockfighter (supporting role) both by director Monte Hellman.
Cockfighter trailer
https://www.youtube.com/watch?v=cCl4TEfQGu0
And the same trailer with commentary (Trailers From Hell)
https://www.youtube.com/watch?v=1d6_nJYFXys
Thank you for that. Had not heard of Monte Hellman.
Low-budget early 70s cinema is always interesting even if not great.
Cheers,
In 2-Lane Blacktop HDS plays a gay hitchhiker.
Oates gives him a ride and HDS puts his hand on Oates' thigh.
Oates then snaps: "I ain't into that!"
IDK why I always thought that was such a funny scene.
Probably because I couldn't picture HDS as gay.