Guess I'm the oddball here...if the feeder isn't large enough to hurt the snake I WILL NOT watch the snake kill it if it's live. I don't want to watch things die....if I had to feed live to one of mine and it was a mouse/rat that could do damage I would make sure to observe the feeding to make sure my snake didn't get injured. But anything else...I won't watch.
Thank goodness for F/T feeders! Those I do love to watch my snakes eat!