Originally Posted by Remi
In this case I recommend the 117 if you want to use the 9.5 and keep your 107. I use and PWA racers use with a lot of success the Reflex 9.2 like Steve Allen. You can use on this 117 7.8, 8.6 & 9.5.
If you don't plan to use the 9.5 then 110 will be enough but very close to 107, 107 will be better in very choppy condition with 7.8 and 110 better in flat water to moderate chop due to the different width and with 8.6 the 110 will be better all the time.
Hope this help
All the best
I think it all depends on conditions. The lake where I sail gets very choppy in 7.8 weather in some directions and flatter in others. The prevailing direction it is very choppy and being a lake the chop is very close so the 107 seems to work better. Most lakes seem to have the same.