This looks like a good way to get injured. When he is in the NFL it will probably be in his contract that he can't ride a hoverboard or skydive or anything else dangerous
Not for a 20 year old. Ever tried riding a rip stick? Virtually impossible for anyone over 35. Simple for anyone under 25.
Not for most 20-year old skateboarders. I'm thinking of a particular 20-year old with multi-million dollar NFL future. He doesn't need to go down hard on his knees even once.
I don't know what a rip stick is bit I put on a pair of online skates one time. The kind with only one set of wheels. I made it to the carport by holding on to stuff and putting my hands on the walls. Was ok going between my truck and boat. When I got past there and had nothing to hold onto I knew it was a bad idea and I took them off.