[Diamond18]

I am very partial to the Hobbit hair in the movies, and as I am not sure exactly what Tolkien intended I prefer to picture it that way.

However, as Tolkien I believe patterned the Hobbits after late 19th century bucolic Englishmen, I think whatever length of hair was prevalent amongst that lot can be ascribed to Tolkien's mental imagery. Unfortunately I can't remember where I read about Tolkien's inspiration for Hobbit culture, I assume it was the letters which I only read a library copy of a long while ago.