Following up on the safety discussion, there is a significant difference between Downunder's buddy's bar and the North parts bar that Toby has described.
With North quick release/Iron Heart parts (even if you add them to a non-North bar with a micro-loop kit), your kite will flag out with the CL quick release even when you're hooked into the micro-loop.
With the windsurfer loop method, your CL quick release won't flag the kite when you're hooked to the mini-loop. I say this on the assumption that the mini-loop gets hooked to your spreader bar, since you won't have the micro-loop kit with extra hook. There is added risk to this method, IMHO.
Only an assumption, I don't think anyone would hook a bar to a spreader on harness. The above pic does not suggests so, it is suggesting that the method of making a loop is the same, not drilling or anything. And not about hooking.
As always, this are advanced setups, for advanced level of riding.
If someone knows of a method of adding a reliable hook above the CL without using North (or Core) parts, I am interested. I considered the windsurf-loop modification for my bar, but couldn't figure out a way of making it work (and still flag the kite with the quick release when hooked to the mini-loop). I ultimately modified my existing 4-line bar by drilling holes and adding the North microloop and quick release system. It works well, but I am always receptive to other ideas that work in a similar fashion.