When Rick is talking with Trudy he says that in fifteen years she would be washed up as well as him. Kurt Russell was one of an extremely small number of child stars who continued to have a strong career through adulthood. In fact, he was the only one to end up with high-profile roles into his senior years, having made this particular film at the age of 68.
The opening scenes show two good guys responding to a late-night horse theft and riding off without cowboy hats, making the audience wonder if this was present-day. Presumably Wanamaker rationalized this hatless aspect as depicting haste, yet he forgot about how this might be interpreted by an audience. Also, they were both wearing plaid shirts, with was also odd. Plus much of the camera work, angles, sudden zooms and the like were very strongly influenced by TV detective shows of the day. These were reflections of Wanamaker's personality, which no doubt were noted by Quentin Tarantino when scripting and directing the Wanamaker portrayal.
It might also be noted that Leonardo DiCaprio's scruffy, shaggy-haired, mustachioed hippie-villain in this film was very closely modeled on the look that Wanamaker designed for the original actor, Joe Don Baker.