That little hill is just a staright driaght drop down and right between 2 trees, and the tree roots go right across so you don't get any traction with your rear tries. You have to bump it up over and gas it while your in the air, i didn't get footage of my dad doing it so you couldn't really tell.
Submarine, there is a hill about fifty yards down from there that I flipped our old recon backwards on. It was loaded beyond capacity with camping gear and I was about 12 at the time and still thought I could climb anything. I jumped backwards still holding onto the handlebars and the front brake lever where the fluide goes landed on my foot.