Not as many as I thought. Well quite a few do.off the top of your head, who tips and who "rocks the U?
Another thing comes to mind, watching my dd use tip and rip, it works better on low pitches, than on high,.... for her.
I've experienced the same thing in batting practice with my DD--the tip-n-rip works best on knees to belly pitches, not the high stuff.
Fewer girls show the tip and rip pattern of MLB. Could it be because the pitch is flatter (no mound) and in many cases higher and the hitters are usually shorter.