I forgot to mention that we mostly race in very gusty winds where big sail is required to go thru lulls. I find it much easier to hold the big sail in strong gusts with wider board than with narrower, and bigger board is also faster thru lulls. So 107 is not really an option for real world racing with 8.4 in light winds
Lets say that I need a board for 8.4 for 10-20kts and for 7.6 for 13-25(28)kts.
Which one is easier to gybe and control in chop? 117 or 117wide? Is there much difference in marginal 8.4 conditions? Or 117wide is better only with 9+ sails?