"The wings provide the lift"is a half-truth often heard among foilers. On closer inspection, this statement is not true, because lift is actually only generated by the front wing. The stabiliser, also known as the backwing, actually generates downforce.
Klaas Voget and designer Jerome Bonieux from manufacturer Duotone explain why this is the case and what adjustments you can make when tuning your own grand piano in these two episodes of their Tech Talks.
If you are interested in more Tech Talks, you should definitely check out the YouTube channel from Duotone check, there are more topics here.

Editor surf
Manuel Vogel, born in 1981, lives in Kiel and learned to windsurf at the age of six at his father's surf school. In 1997, he completed his training as a windsurfing instructor and worked for over 15 years as a windsurfing instructor in various centers, at Kiel University sports and in the coaching team of the “Young Guns” freestyle camps. He has been part of the surf test team since 2003. After completing his teaching degree in 2013, he followed his heart and started as editor of surf magazine for the test and riding technique sections. Since 2021, he has also been active in wingfoiling - mainly at his home spots on the Baltic Sea or in the waves of Denmark.