I think maybe these are it for the H21

Hobie 21 no spi H21 67.0 71.9 69.2 66.3 61.7

SP Class normally without spinnaker, genoa, reacher, hooter or wire/rope luff headsail attached to a pole, carrying one or more 0.960 0.953 0.958 0.960 0.960

--------------------..DPN....0-1.....2-3......4.......5-9
Modified Portsmouth 64.32 68.5207 66.2936 63.648 59.232

You got wings? Maybe adjustment for them as well. Also consider your crew weight, might adjust also.

You'll need a Class Flag, check your Private Messages.

Check NOR for other requirements like checking in with RC.