Jump stop vs "up and down"

[docofficial]

Thanks for all the good discussion.

Some of these latter posts are getting to the heart of the matter: there are some interesting implications if it's not a travel. I, frankly, think the jump stop should not be allowed. It's too difficult to officiate (we've got to watch the defender [referee the defense] and still observe if the feet come down simulateously, the offense already has enough advantage in this game - they don't need another move at their disposal, and per this discussion, a smart coach and player could use the rule as its written to a tremendous advantage.