If you are not used to looping the kite, but relatively steady at hydrofoiling - then I would start looping the kite when not powered much of course.
But do it going straight, a bit downwind.
Go downwind, and loop the kite forward and around, and backward and around - this is a good way to practice.
You will get pulled a bit further down when the kiteloop "peaks". and you naturally turn up a bit more when lines are less loaded.
A really good excersize.
I often ride downwind like that for fun, looping the kite both ways over and over.
Can also be done on upwind and halfwind courses - but be prepared that you get so much more peak pull that you HAVE to bear downwind a lot, and if not, you might get pulled over/off.
Looping like that downwind, without carving/turning, you will learn how it behaves, as at some point of the loop you have to sheet out, to get the kite to climb again, depending on how deep you go.
When you feel comfortable doing this, you can start downlooping and carving at the same time - much more difficult at first, as there are roughly two very different ways to get the timing right, and loads of ways to get it wrong
PS: I assume you are talking hydrofoiling here, right ?