Now on the web site;
https://finwhispering.com/product/whisperfin-pro/
"The choice between the original and pro versions of the WhisperFin isn’t so much about boat speed or line lengths as it is about skiing style. Here are some factors to consider:
*Both fins benefit novice through expert skiers by making the ski easier to turn and accelerate.
*Both fins benefit advanced skiers by making it easier to keep the tip down while exiting turns.
*Regardless of line length or skill level, if you tend to approach the turn tip-high then rotate a
lot of tip into the water to turn (think windshield wiper), the pro version is far more forgiving
of this technique.
*If you tend to blow the tail out of the water or to get a lot of tail slides when scrambling, go
pro.
*If your skiing inputs are smooth, progressive and controlled, the original WhisperFin can take
you all the way.
*And since the original rewards smooth skiing, starting a novice on the original WhisperFin
helps build ideal technique by rewarding and reinforcing smooth balanced inputs.
*The pro can always be mounted shallower in the ski to make it just as novice friendly as the
original. But running the original deeper can’t replicate the benefits of the pro’s improved
grip at high roll angles and extreme levels of smear.
*The original is 1/3 cheaper while supplies last."