You only have to keep an eye out until the rodent is safely dead - much less time than it takes to thaw. I'm not sure how this makes effective rhetoric for your anti live campaign? More time in the snake room sounds like something for the "pros" list to someone who enjoys spending time interacting with and observing their reptiles. Let's say you give a snake 10-15 minutes to dispatch a prey item before abandoning a feed. Seems to me, feeding live only takes 10-15 minutes longer than feeding f/t and you don't have to thaw anything out. Maybe it takes a bit less than that as you also don't have to employ any of the "tricks" used to get some animals to accept.
I wasn't actively campaigning anything ... To be fair my question was aimed at Debs as she's feeding 250 + live each time and as you're supposed to be watching closely I couldn't see how this was possible - basic math.