I'm using John's method for winding my quad lines exclusively now, but with a couple of individual quirks!
1. - I color code all my lines! Colors are the same for top right and bottom right, top left, bottom left, kite and handle ends!! Yeah, I know it sounds tedious, but it keeps everything straight in my mind!! After a stroke, everything helps!
2. - I use 2 stakes for my handles, 1 for each! Helps keep them separated as I wind or unwind!
3. - I place a finger between sets of lines to keep them separated as I unwind! At the end, I have 2 sets, left and right, ready to attach to the kite!
Anyway, this works for me and I do it EVERY TIME, EXACTLY the same!!