Everything you advised was spot on so I am not disagreeing with you. Just pointing out that using standard terminology helps us as coaches avoid cases where our client becomes confused about what we are trying to get them to do....
^^^ What he said!
The main thing is when you watch somebody jump who isn't "pumping the tranny" it's very obvious. To the OP, watch some of the fancy snowboard porn videos out there, and watch that on 99.9% of the jumps they are compressing, bringing their legs up while in the air.
Would you jump off a table straight legged? Only once! Then you'd realize that jumping off and pulling your feet up to your body makes the whole motion more smooth.
BAH just go back and read what Wolfie said, he's got a much better way with words than I do! lol