The standard of people up there on a sunday isnt that massively high TBH
First time I ever went there, I had only ridden my bike a couple of times, and I was FAR from the slowest there and was beating people on much more powerful bikes.
You just have to disconnect your brain for MX and not use the bit that says "what if I hit a tree" or "the bike is slipping around I need to back off" and instead just keep it wound open, point it roughly where you want it and see what happens!