How can we just swallow it when
Huff's father goes from *beep* Forster, to inexplicably showing up one day and it's Tom Skerritt? I mean, he actually probably better approximates what the writers had in mind, but he hasn't got nearly the presence. He comes off as too goofy.
And when he disciplines Byrd (very reasonably as far as I could tell), Huff describes it as though he was revealing the monster he really is. Forster could have conveyed that menace in a way Skerritt never could. You get Skerritt to play the hippie type. You get Forster to play the hard ass.