My eyes had to remain open for quite a while, but eventually they did spot (and got hold of) a second Skychaser, so I now have a 2-stack of them!
As the kites are quite small (1.26m wing span), I made a set of relatively short stacking lines, but the only way to test whether stacking lines are the correct length is of course to fly the stack.
They really flew well stacked, and it appears my choice of stacking line length was pretty much spot-on.
In my earlier blog post, I described the Skychaser as a zippy kite, and that zippiness remains a characteristic when stacked. They respond well to input, without much oversteer. Obviously, small as they are, even as a stack they hardly develop any serious pull.
I will be looking to add more Skychasers to the stack, so my eyes will have to remain open for the foreseeable future. See how far I get!