Can you do a TS 3? If you can then the 540 is very easy. I actually learned the 540 first then I learned the 360 W/different grabs. To do the TS 540 all you need to do is cut a little bit harder than you do on your 360. Do the 360 and as you make the handle pass keep spinning and pull the handle in front of you and kind of to the middle of your waist. land switch and edge away from the boat on your heels
I can do ts 3's somewhat consistent. I started trying a few 5's last weekend and they aren't that much harder. It almost seems easier at times since you are able to land heelside leaning against the rope. On the 3, you almost have to move and handle back behind you to stop your rotation.