I am a new skydiver this season with 70 some jumps. I bought a rig shortly after getting my A that does not have a bungee between my leg straps. Just took a canopy course and was introduced to the idea of the "active pilot position", so moving my leg straps down a bit on my thigh after opening so that its easier to make harness turns. However I can't help but feel like I might slip out of the back of my rig like in this (https://vimeo.com/96037725). Are bungees designed to prevent this from happening?