How bad is it? I remember think it was bad when I saw it as a child.
Should you see it? If you can find it, which won't be easy.
Shown once in (I think) 1974 on television as part of "The World of Mystery." This was produced by Dick Clark and starred Tige Andrews of "The Mod Squad" as a farmer who gets struck by lightning and becomes a werewolf that drinks beer and hates the hippies who congregate at the abandoned stage at Woodstock. I saw this, but it's been 40 years, so it's hard to remember details.