CGRetired,

"The delay is each time you press the button. That one second should not be a factor in determining if to use one.... just make sure the student is at least "3 mistakes high" in altitude, meaning plenty high up there.. and that the plane is in trim and the student is ready to accept control. Say to him or her.. 'YOU HAVE THE AIRPLANE' before pushing the button."

I just want to mention something here from my experience. I have Futaba 6EX 2.4 and my 12 year old son's is 6EX 72. I have buddy boxed with him a couple times. When I toggle the trainer switch, that one second delay can be a little bit strange. A couple times I have said "you got it" and he says "no I don't", and then a second or two later he will say "OK, I got it". I have checked with Futaba, and they say it's normal. What has worked best for me is to show him while on the ground and no engine running EXACTLY what is going to happen when I toggle the switch. An easy way to do this was to hold one of the control surface sticks on the "master" box in a postion different from the "slave" box. Then when I hit the trainer switch, he could really see that "one second delay". I am just mentioning this because it scared him the first couple times.[X(]

On another note, we were out flying yesterday, and my boy sure loves that Tiger 60.