I'm not a lawyer, but pretty sure it IS legal to shoot him then...at least in the elbow.oh..yeah..$25 is great bargain for positive words of mouth advertising..
Problem is the next time he wants you diagnose the problem(s)on his gun and doesn't want to pay the $25 fee?..What then?(cuzz ya know, you didn't charge me that last time?)
I could be wrong about that, but I know what you're talking about...believe me. It can be a delicate dance, but having someone leave extremely upset should be the absolute last resort. I'm sure I'm not breaking new ground with that statement.
It's also true that different clientele require different skill sets. Fo sho.