How about 180 grinds, did you tried already that trick?
A 180 Grind is a trick on the rail that involves a 180-degree turn at the beginning and at the end of the grind. This will help you to fine-tune your movement in the air and will teach you about the importance of balance, timing and approach. Make sure you are already comfortable with Ollies and making turns before trying this trick.
I'm still searching for detailed 180 grinds steps and maybe next time that I'll visit here I'll post it in this forum..Thanks