i would def not assist feed... that will cause even more stress then your snake is already under. i would go with like, but if you go F/T i would do the zombie mouse dance. use some tongs and make the mouse dance around to get the snakes attention.

when i got my first BP it took a couple weeks for him to eat, he would kill the live feeder and then stare at it all night. but now i hold the F/T mouse in there for no more then 20 seconds and it's gone.