We do a walk around EVERYTIME we tow.
My wife goes back by the toad as I pull forward slowly and she checks that ALL tires are rotating and flashers are flashing.
It's very easy to drag a toad with the brakes set or the transmission in park. Believe me.
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS