1. fin
So there are a lot of fin systems that have been designed over the years, each with their own advantage and disadvantages.
All images from the unifiber.net/windsurf-fins page.
1.1. Powerbox
Slalom fins ~25-50cm
</img>
1.2. US-Box
Wave fins ~10-25cm
</img>
1.3. Trimbox
idk
</img>
1.4. Slotbox
Freestyle ~15-30cm
</img>
1.5. Tuttlebox
Slalom fins ~25-50cm
</img>
1.6. Deep Tuttlebox
Slalom + Foiling ~25-120cm
</img>