I suck at riding switch.
So i started out riding very slow, 18 or so, on a short rope jumping about halfway across doing switch heel 180s.
I slowly sped up and got more and more comfortable.
It's important to be very comfortable doing the 180 off the wake before speeding up. At this point I've done a 100 switch heel 180s and the edge in still feels very awkward to me, but the landing is very easy.
Starting slow and working your way up is much easier than going balls out. Take the extra time so you don't hurt yourself on something so basic.