For safety reasons we supervise EVERY feeding.
This covers one of my objections to live, but I'd already figured out you were careful with safety.
Presentation is key, only our proven HKs (Hunter Killers) are allowed to ambush their prey, the rest are presented pray by the head, where they may make a clean safe strike and constrict before we release them to finish the job. Often the entire process takes less than three seconds after the cover has been removed. When you feed live you will notice feeding is INCREDIBLY efficient and goes faster than you expect.
You know, the presenting it so the snake always gets a head strike is quite clever. I never would have thought of that!
Once again I remind all you all that I have one wild caught snake that we are rehabilitating that would make very LITTLE sense to feed f/t he will always be fed live and left to his own devices to pursue his prey and make the strike. I also have another W/C snake that is a live feeder only, and two more that are extremely difficult to feed f/t and it is not worth the effort and the refusal to feeds to attempt conversion.
Oh, if you are rehabbing a WC to return to the wild, live is really the best option. I have to agree there. I might initially offer p/k until the snake is healthy, because it doesn't need more health problems on top of the reasons that brought it into my care for rehab (if I was doing this) but once it's healthy & I'm just waiting for spring, or waiting for proper weight gain, it's got to be fed live to be able to go out & kill its own meals after release. And I can see that WC animals might not transition, so if you tried, and failed, oh well.
I'm not going to try to persuade someone like you, who isn't a sadist and IS very very careful of their snakes' wellbeing, to give up feeding live altogether. You've got snakes for whom live is the only option, even fresh p/k isn't (like the rehab to release snake).
I get the heebie jeebies about the folks who LIKE hearing the mouse die. And I worry about the ones who throw a mouse in alive and leave the house. But neither of these is you. You've thought out the reasons AND are careful to keep your snakes safe. I am not sure I agree with you that live is more nutritious. Freezer burn isn't decomp, it's dehydration. I don't agree with you that live is more nutritious than fresh p/k, how much nutrition can a rodent lose in 5 seconds? But you've clearly got snakes that WON'T take p/k, or shouldn't because they will be returning to the wild.
I do see that under some circumstances, live OR fresh p/k is as cheap or cheaper than f/t, IF you can raise your own rodents very inexpensively while still raising high quality rodents. ~You~ can do that. Dunno about people who think that dry dog food is complete nutrition for mice or rats. But for those who have the situation where they can run a rodent colony very cheaply the price could be quite favorable. For anyone who doesn't have the option of a rodent colony, but has more than 1 or 2 snakes at most, splitting an order of frozen is much more cost efficient IMHO.