RE: iSONIC 101 TOO BIG FOR 6.2M AND 73KG??
I don't think a RSS 6.2 sail is ill-matched to iSonic 101. If you can read french, check what Christine is currently using with her 166 cm x 62 kg light weight frame : http://www.star-board.com/forum/viewthread.php?forum_id=12&thread_id=21587
Executive summary :
6.3/6.8/7.3/7.8 North Warp 2007 sails
Goldwing 34 & 36, TomCat 40 cm Tectonic fins
mast-track set between 131 and 133 cm from tail
all the straps back with a 40 cm interspacing
Best sail size are 6.8 & 7.3 for her sor far. With 6.3 sail size, she whished she'd 20 kg more weight or been on a smaller board with an increasingly challenging chop that was building with stronger wind.