Most sea devil's already have wingtip weight btw. 3 grams per side IIRC.
Like obi said, SUL's (and light UL's) are the easiest to learn it on.
basic taz movements:
flying left to right.
It helps if right before the trick you turn upwards very slightly
Small, sharp input with right hand quickly followed by the same input with the left hand.
Toss your left hand forward, and keep your right hand back. You should look like you're about to do a right hand dominant slot machine. Right hand will have tension on the light, left hand not.
No, really.. WAIT.
The nose will flare up past 'belly flat'
The whole body of the kite will start to turn. The left wingtip (which is connected to your right hand) will be higher than the right wingtip.
Give a large, firm pull with the right hand and then give slack like the lines are on fire.
Keep giving slack...
Step forward and give some more.
(if you skip this step, you'll likely do a taz machine.. but a very ugly one.)
Then pull back and fly away.
Last video I released you can see me physically doing a taz machine in low wind with the Spike XS std.
Maybe that will help you a bit. There are a few taz machines in there and the one you're looking for is at about 4:24.
On the sea devil the main thing to getting the taz machine, in the relatively low success I've had (so just assume I could very well be wrong please), is you have to wait an unusually long time for the 'tilt' of the kite before you can begin the spin. If you're too early then you'll end up in a turtle.
Anyway this cake is great.
It's so delicious and moist