Weird thread.
My experience is that whenever I pass someone who thinks they have any kind of get up and go skills, they ALWAYS hang on my wheel until I drop them. No exceptions.
I can usually spot these guys as I approach them because they tend to step on it as I get closer. Once I pass them, they swing in behind me and give it the old college try, most fall off rather quickly. The few that hang in there are really not an issue; there are so few.
I guess my question still stands: Why not just drop these guys? What is the problem?