Chris fissel was doing dolphin flips back in ‘91 when he first got on new deal, not sure if he initially invented them because there were a few others doing them around the same time, that trick has been around a lot longer before people like Darrel Stanton and Matt beach started doing them. Ali mills was doing them too, remember that dude from the video “a quiet storm”? That guy was light years ahead, Ali was probably the first person to do a nollie flip. No offense or anything but you need to dig deeper into skateboarding‘a past, that trick was done at least a decade before any of the skateboarders that were mentioned.