Assuming you can do a TS 3 every single time without a second thought.
Do a regular Scarecrow. Try to take your crow straight up and down. (A shorter, deeper cut will help you learn it.) On the way down is when you want to throw the last 180. As you come around for the crow, just continue as you do for your TS 3.
Pass the handle as you land or just after. (Do it the same way you do the TS3).
Do a few TS 3's and then go for it.