NN
IHMO 5th lines are best for self landing.
If you use someone else to help land - (and even your most trusted BF can still trip and drop your kite) - then be ready to pull QR until your kite is on the ground LE into wind with board/sand on it. Probably best to unhook as soon as the lines go slack (but keep a leash on).
From my light aircraft experience - a common time for accidents is right at the end of a flight when you start to relax. Approaching the runway - you begin to think about a beer in the bar - and wham - engine cuts out/wind gust picks up one wing/another aircarft taxis out onto runway in front/you forget to put undercarriage down or (as happened to a Korean guy out of Jandakot two years ago) you run out of fuel and land upside down in someone's backyard.
It ain't over till its in the kitebag.....