Hi. I have a Vegas and an old set of North Rhinos, and even after using them for over a year, I sometimes still get the lines confused and crossed over, only to know this once the kite's in the air!
It's annoying as hell, cause I have to land it and redo the entire thing again.
The worst is the LH (left hand) side of the kite or the wing-tip of the kite that's closest to me as I walk up separating the lines. I usually lay the lines at right-angles to the kite (due to narrow beach area) and walk the lines and connect them. Easy peasy, but with C kites that don't have bridles, I sometimes get the front lines crossed over the back lines. What I have to remember, is front-right-hand-line goes OVER the rear-right-hand-line. Is that right?