Bit off topic,i know
For me ,as a medium jumper with much more time on the 800&1200qcm (XL,KoolV2) than on the 660 Freerace with 10m Soul and 13m Sonic2, i get `mixed`results.
Timing the `send`and getting maximum line tension is for my stage of riding more important than the factor speed if it is above a minimum, let`s say 35km/h.
Riding with comfy speed, even with the 1200 i get better timing of all components for good vertical heights, then pushing the Freerace `wannabearacer style`
and totally missing the take off.
In low wind the Sonic beats the smaller Soul by a huge amount, I guess even in case of lower take off speed.
No doubt for my technical level line tension and timing is much easier when not totally lit on the foil. Comfortable speed- better height for me