If you're wrapped correctly, it doesn't take long or much to learn how to edge in properly to the wake. That's mainly the key, along with just making sure you WAIT until you're at the highest point of the pop before unwrapping.
It's tough to explain in words but I'll give it a try. Maybe we'll get a chance to ride together before the season is over and I can help you with it.
1. Make sure your wrap position is correct before starting your approach to the wake - (If you're left foot forward, and spinning FS you will be holding the big handle with the left hand and the small handle with the right when wrapped)
-Once you start wrapping up, make sure your left elbow and shoulder is solid & square with your hip.
-The top of your left forearm rests against your lower back with the big handle in hand. The left palm should be facing away from your back. In this position, your left hand should be on the right side of your lower back.
-The right hand should be firmly gripped on the small handle with even pressure between the small handle and the bid handle.
2. Once wrapped properly, keep your weight even on both feet as you edge towards the wake.
3. Also, keep your shoulders and hips level while edging in. This will help you keep your board on edge and constant load on the line by using your body weight. You should feel like you're leaning back into your left forearm that's placed along your lower back.
4. Keep this position as you approach the wake.
5. Take your time as you ride up the wake, DON'T RUSH! You don't have to force the rotation.
6. Once you leave the wake, make sure you wait until you're at the highest point of your pop before you look over your left shoulder to start your rotation.
7. Keep your chin up, don't look at the water. If you're getting out of control, it could be because you're trying to spin right off the wake and looking towards the water.
8. Once you begin the rotation look for the boat and keep the left hand/handle in. If you let it out, you could be pulled out the front.
I know this is a lot of information, but I hope it gives you a sequential process that will help you make your wrapped 360's consistent.
Let me know when you plan to ride again at Jordanelle or Deer Creek, maybe we could hook up to ride.