roll over traveling

[Adam]

Originally Posted by Mechanicsman

Well you have to be rolling to gain an advantage.

This could mean any number of things, so let me try to restate so I understand.

Are you saying that in order to travel, you have to gain an advantage with the roll?

Are you saying that in order to travel, you have to be trying to gain an advantage with the roll?

Are you saying in order to gain an advantage, you have to roll (it may seem silly, but it's a possible meaning of the sentence as worded and I'm not sure it's any more crazy than the other two).

Must a player gain an advantage by moving his pivot foot illegally before you call the travel? If so, based on what wording of the rule? If not, why is it different?