I politely submit that a person cannot tell a buck from a doe by any method except the very general guideline that a buck track is bigger than a doe. I don't mean to insult anyone, but all the stuff about dragging, and dewclaws, and wider chests, etc. is, well, hokum. Here in western MT, a track over 2" wide is almost certainly a buck, over 2 1/4" wide and I'll bet the farm on it. A 2 1/4" wide track is representative of a 3 1/2 year old buck. The exact cutoff width in your part of the country might be different by 1/4" or so, depending on your deer subspecies. I hunt with one of those school kid's protracters in my cargo pocket for measuring tracks. (Yeah, I know, it's nuts.)