I had an hypersonic 105 (2003) and like(d) it very much. Hypersonics are just very special boards. The best tuning I had was a bit like formula tuning...
If you have small sleef sail put your mastfeet 136-138 from tail
If wide sleef 134-136 would be good
On the hypersonic I liked the outer footstrap postitions very wide stance. At the moment I like close stance (isonic)
For real early planing try to pump very active... the reward will be big (no formula board needed)
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2011 Starboard iSonic woodcarbon 107, iSonic speed special W54, iSonic speed special W44
Severne Reflex Sails