Some of my KAP techniques and experiences. Maybe common practice, not sure. :)
Large kites for KAP require anchors. There is just too much tension on the kite-line to keep you happy. A good habit is to use an anchor, a fixed strong place to connect your line. A fence, a bridge, your car or a tree. I'm using a thick strong rope to start with. Generally I find an anchor point, but you can bring your own, good for sandy beaches or meadows. You can use pins, sand-filled bags or whatever, as long is is strong enough to be safe.
A bad aspect from a fixed anchor point is that it does not allow you to walk around with your kite and rig. It is a good habit to start your kite in a safe place, lift your rig, and when everything flies fine, to walk to your photographic destination, as long that the landscape allows you to do that, and everything is safe. Kind of dog on a rope. It works just excellent, and gives you many extra opportunities. Kites with a high flight angle (like the KAP Foil) are very useful, to dodge poles, trees and lanterns. Doing your homework with Google or Bing helps here.
I experimented with climbing tools. They work great with KAP Foils, but this can be used with almost any KAP kite and frees both your hands for other tasks, like operating your radio control set. When you start using your own bodyweight as an anchor, you keep feeling the pull of your kite. That's much better in changing wind conditions. If the wind drops, you get a notice immediately and change your focus from photographing to kite flying.
To get rid of the line pull I use an climbing harness. (Black Diamond) Works great. I'm using two sets of interconnected carabiners and a figure eight. That setup allows you to switch from a fixed anchor point to yourself. The black and orange stuff is my climbing harness. You can transfer your kite easily when desired. When you fly an KAP Foil 5 or larger, you immediately understand that there is just too much pull, even with gloved hands. So, for every transfer you use an interconnected set of carabiners, providing a safe transfer.
The figure eight is used to get rid of the line pull. Use it in the normal manner, and then add 10 turns of kite line to the smaller ring, before you attach a carabiner. NO KNOTS. You will have serious trouble with knots under tension. I secure the line through the highest carabiner, and add 5 turns of line to the lowest one. That usually takes away all slip in your line. Again, no knots. Make sure that you always can remove one of the carabiners. A KAP Foil 5 can give you a hard time, providing there is enough wind. In normal conditions you can walk around hands free. You can hold your spool with one hand, or fix it and wear it around your shoulders. Be safe, and always carry a one handed knife, like when sailing a boat. A Leatherman tool works great.
Finally, you need to bring your line up and down. I'm using an Petzl mobile pulley. Open it, put it over your line, close it with a carabiner and walk your kite down. Almost effortless. The carabiner serves as an handle. Then recover your kite, disconnect and put your line on the ground, and recover your line.
The photos provide you with some explanation. Strong enough for a DSLR Rig. All comments and good ideas are welcome!
Finally: these techniques serve you for ANY KAP kite, not only the big ones. It also brings instant kite feeling, removes stress, and adds safety.
The climbing harness with attached kiteline:https://www.flickr.com/photos/22909965@N06/13929697502/
Take away line pull with a figure eight:https://www.flickr.com/photos/22909965@N06/13952791315/in/set-72157644184160343https://www.flickr.com/photos/22909965@N06/7226384876/in/set-72157644184160343https://www.flickr.com/photos/22909965@N06/7226340554/in/set-72157644184160343
Climbing tools for large KAP Kites:https://www.flickr.com/photos/22909965@N06/7226381730/in/set-72157644184160343