OK, so if he is good "behind a cow", does that mean he is a roping horse?

Being good "in front of a cow" is that a cutting horse?

Is a tall horse a liability in roping? I would think it would be generally good, because longer legs could mean a quicker break...although not always, of course.

I have only ever talked to one competitive-type roper, but he said he much prefers a horse 15hh (14-14.2)...but he was the person who jumps on and off (calf roping I guess?)

Yah, I know, stupid questions. Rodeos aren't always the best places to ask these questions.