Looks way to loose to me. They should be pulled up tight. 60" bungee loop to loop with 5 wraps was what was used on early Kitfoxes. That was with 3/8" shock cord used for bungees. Not some cheap bungee material you might buy in a hardware store. JImChuk http://www.aircraftspruce.com/catalo.../shockcord.php
That must have been on a Raven. There was one at his airport. On the Kitfox, it loops over the place he hooked to, and goes off the side and loops over another lug. I installed the bungees last summer on my Kitfox 1 by myself. I did use Dave's trick on the top, and jammed a stick in underneath to hold the bungee to the bottom, then stretched going up to the top and used the hammer handle with a stick under the handle to hold it while I pulled from underneath the plane for the next half wrap. It was a real bugger though. Much easier with a second person. And way easier on a Kitfox than an Avid. With the Avid, you don't have the double tube to jam the handle into. JImChuk
The 4 1200 seems to have a different setup with another capstan? Off to the side,but the "Dave" trick works a treat on either.
What ever happened to Dave, his YouTube posts were not only educational at times but always entertaining.