You probably shouldn't listen to me because I got kicked from a RR last time I played!
But one question.
Do you want to be able to tap to make your roping look nice or to improve your roping for, say, leagues?
If it is to improve your roping, don't learn to tap directly. It really isn't the way for control. The more taps, the more chances of a mis-timed tap, and therefore more chance of an error.
Work on timing. Watch replays of others and use them to rope yourself.
The way you use the arrow keys and the time when you hit the spacebar is more important than the amount of times/how fast you hit the spacebar.
Afterall, there are 4 arrows, one spacebar.