Owner Pilots
I am with G200 on this one. RUN!!!!!!
I did it for 5 years. and believe me, when He runs his King Air - 200 out of gas and wads it up in the desert, the FAA will want to talk to you even though you were not even there this time!!!!
They dont listen as a general rule, and when their ticket gets suspended, they might expect you to let them fly in the left seat on yours.
I had one that actualy wanted to learn, but he was rare.