What iSonic did you hit 30knts with? That's my target with my Futura 93l. Now that my RAM 5.8m is fixed, in good conditions I should be able to get it. Max so far is 25knts, though that was on a completely destroyed 6.0 camberless, and partly panel and battenless, sail.
JP Super-X 106l, North F8 Ram: 5.8m,