So for the F12 a stayed rig with 7-9 m2 of sail depending on the conditions you are sailing in.
Are the stays important? Wouldn't a self standing mast work almost the same way?
I was thinking of upping it closer to 9 or 10m by adding a jib so that two teenagers can have a go on it.
A well engineered non stayed mast should work fine. I had a wow of a time on a Bic open with unstayed rig in big wind but my kids want traps and deep down I want traps so I can use it on days when my other cats are overpowered.
regards