Cut outside of the wake about 10-15 feet and wait for the boat to start to naturally pull you back towards the wake. When this happens, bend your knees a bit, put the board on the heelside edge slowly, keep the rope in tight, and lean away from the boat. As you approach the wake, your edge should be getting harder and harder. This is very important for this trick.

As you hit the wake, you should still be edging hard with the rope in tight, but you now should be standing tall like the rider in this photo. Also, people tend to leave early when learning a backroll, keep edging hard and standing tall and the wake will kick you up into the roll without you having to do much work. As you take off, look over your front shoulder and up to initiate the rotation.

While in the air, you can control your rotation speed by your rope position. If you're underrotating, keep the rope in tighter, if you're going to overrotate, then let the rope out a little bit as you spot your landing like the rider in the photo is doing here.

You can usually see the water pretty early on this trick, so get your head up and spot your landing. Some people find it easier to let go with their back hand to make sure they don't do a roll to revert.