I had problems with spray can clear, but it could have been my prep. It cracked like a dried up lake bed.
I have a pray can paint job on my current bike. Don’t spend too much time on the paint. It only needs to look good from 20ft away. The track is going to destroy the paint with rock chips abs scratches. Don’t sweat the bodywork. Just spray and play
my bike is rattle can flat black with vinyl stickers, looks great from a far and if I have an off, I can repair and repaint easily.