The Invert is a good trick to learn once you are good with backrolls and wake 180 fronts. The pull on the rope from the boat causes the rotation, so there is little work that the rider needs to do. If you can follow these simple steps, like keep the handle at your waist, you may get the Invert on your first try.
Begin with a hard cut at the wake. When you reach the trough just before the wake, spin around 180 degrees and tuck the handle into your hip. Turn clockwise if you're cutting to the left and turn counter-clockwise if you're cutting to the right. Ride up the wake while resisting it.
After you launch from the wake, and not before, throw your head down at your outside knee. When you are upside down, bring the handle to the front of you but keep it at your waist. Also, at this point, you are basically doing a regular backroll. So, remember to straighten your back up and don't be bent over at the waist.
I come out of my board when I hit the wake. You're throwing the trick too soon. You need to wait another second until you're in the air.
I can't get enough rotation. Either you need to get higher with a bigger jump or you're letting your arms out.
What's next? The Roadkill.