What I wish I could say is "frontside bigspin," because it is, in fact, the hardest trick in skateboarding, but the closest I could get to that was in a dream. I was killing the frontside bigspins... But I digress, and revert to my typical heelflip tech: fakie heelflip 5-0 (or switch nosegrind, rather, or whatever the kids like to call it) is a more recent one I found out I could land on occasion.