So, some guy came into the tennis complex that I string racquets for asking for a "stringing lesson". I wasn't there so they just got his number for me. The thing is, I don't really care to give anyone a "stringing lesson". If I'm going to do this, I want it to be worth my time (my life is busy enough as it is right now). So, I'm trying to think of what a reasonable amount would be to request (per hour, maybe?) for this stringing lesson. I have no idea if he wants to ask questions for an hour or watch me string a racquet or have me coach him while he strings one or what, I haven't talked to him yet. What do you guys think? Or should I not even bother and tell the guy no.?