What is the benefit of this design? Thank you!

Ich habe ein Segel von euch Gekauft und die Videos helfen leider nicht besonders weiter. Der Aufbau ist erklärt aber beim setzen des Segels, der genauen Leinenführung etc. wäre bei solch einem tolle. Produkt doch schon was nettes.

Nice 🤩🤩🤩🤩

The wing has an advantage. But isn't this a disadvantage that air escapes unused through the large opening? Isn't this wind missing for propulsion?

Great looking sails! You should publish more videos that are in depth, explain sailing with lots of facts.

very informative and exciting video, thank you :-) ... #sailingtogo

But it's gonna be slower.

I,am trying to get my head around it, is this a Parasailor or a new independent company ? Please be so kind to supply information about the difference in angles, and construction and price difference. I have visit the website but can not get enough info. Are the patent rights expired from Istec ? Thanks in advance.