the training is already done and repeated many times (and reinforced) it's to reinforce the recall offleash (and drop it). He knows.
What I mean is, when you start using the e-collar you don't just slap it on then say "rocky come" and buzz if he doesn't come. What are the steps to using e-collars at first.
I don't believe in training new commands, or even just jumping too quickly to the e-collar. I've gone back and forth on this for two years and again, it's still not purchased.