Me too, CASH only. I have anyone that is interested sign a non-refundable deposit slip to hold a vehicle(usually ask for $200.00 cash or more). I state on the deposit slip that only cash will be accepted for the balance.

Give'em 3 business days in writing on the deposit slip, if they don't finish the deal in the time alotted, the vehicle is back on the market and deposit covers my expenses for the hassle and the people I had to turn away. I hve given an extra couple of days when it seems needed for a nice person, but always have the ball in my court.