If however, you simply don't like the instructor's cowboy boots
I would be very wary of any instructor that wears cowboy boots especially if he is not a real cowboy. Be especially careful if he also touches you on the hand or knee in order to "correct" your handling of the aircraft. Worse than cowboy boots are these instructors that wear Tom Cruise aviator sun glasses over their foreheads or insist on wearing very dark sunglasses looking like a blowfly with magnification x5 and fail to remove said sun glasses when talking to you. Bad manners indeed.