Feeding outside the enclosure can be stressful and isn't necessary, I used to feed in a seperate container and find much more success feeding in the cage.
I will say there is nothing wrong with feeding live, so if that works for you that's great. I find feeding f/t more convinient which is why I switched over from live.
Also, snakes are instinctive hunters meaning they already know what to do and don't need to learn anything.
As far as my snakes doing tricks... they like to take a huge dump right after I clean the enclosure and put fresh newspaper in there...![]()