Agreed with Andrew. You've got your 180 done practically while your board is still leaving the wake. Then you're trying to carry basically a heelside frontroll at that point all the way around. If you pause the video halfway through you'll see you have literally no line tension at all, which is great if you're going Crow Mobe, but you're falling back on your heels because you have nothing to grab you. You want to flip first, the spin happens basically starting around the apex / on your way down.
Again agreeing with Andrew, Learnwake.com is well worth $10/mo. They will offer you individual help and real video analysis if you are a member and submit your video.