Hi Sam,
I am really not interested in H-20 class rules at this point.
I have purchased the spin, I am building the pole and already have a squaretop main. I am trying to give myself options depending on the race. I can race stock H-20 (I just bought a new main) or F-20 if a class ever materializes or "open class". Now I just need good info to set up correctly for any given configuration..