i had some problem feeders this year and the live pinks worked, but haven't tried them on an f/t after they ate the pink as we were at the BCRC Show.
BlueAppleHerps is right with the deli cup, just isolate them somewhere small with the prey and leave them overnight. if that doesn't work, you can try the braining (which i try to do as a last resort as it's not really pleasant), or you can slit the backs of the pinkies. after they have thawed i just make 3-4 slits on their skin. it helps stimulate their appetite, and makes it easier for their digestive juices to penetrate the prey's skin (or so i've heard). so slitting might be beneficial to do, anyways. i just have so many corn hatchlings that i don't bother with slitting unless we have one that won't eat.
you can also try washing the pink with soap after it's unthawed. rinse REALLY well, and try offering.