All my guys and girls get f/t and they all tag and coil. I make sure the rats are really thawed and smooshy and then leave the open bag o rats in the rack/cage area for an hour or so; that way the snakes know what's coming!!
I blast the rats with the hair dryer to raise the temp on the head and tummy. I hold them on their napes with the hemostats and do the zombie rat dance. The snakes tag, coil and eat; with gusto!