I don't know that I'd even attempt these on that...but I noticed one thing. To me, it looked like you initiated a fraction of a second too soon. Like you had the right momentum, but just too early in the jump.
I think maybe 1/4th of a second later and you might have had better luck. You want to float off the end, not ollie off. Just my .02. Keep trying and posting vids.
If you want to be a chick, a dude, a tent, or a velociraptor be my guest, but if you choose the last one you bet your ass I will have a spaz-12 to your face.