Weed Fin Tuttlebox
The GUNSAILS Weed Fin is made for freeriders who love to cruise in flatwater spots where seaweed or grass can be a challenge. Its special weed-cutting profile and steep rake angle help to prevent seaweed from sticking, so you can keep planing smoothly without interruptions.
The wider fin shape delivers early lift and a calm, steady ride – even at higher speeds. Its stiff G10 construction ensures direct power transfer and high durability, ideal for demanding conditions in shallow and weedy waters.
KEY FEATURES:
- Special anti-weed shape – prevents seaweed and grass buildup
- Wider blade – for early lift and balanced glide
- Hydrodynamic design – reduces turbulence for better control
- Durable G10 material – for direct feedback and long life
- Ideal freeride windsurf fin for shallow and weedy flatwater spots
Get the GUNSAILS Weed Fin and enjoy stable, high-speed freeriding – even where others slow down.
NOTE: The fin size is given in millimetres and refers to the fin’s depth.
Find the right fin for your setup.
Our Fin Selector shows you at a glance which fin length matches your board volume, sail size or rider weight. It’s the easiest way to choose the ideal model for your riding style and local conditions.
| Board Volume | Board Width | 4.0 m² | 4.5 m² | 5.0 m² | 5.5 m² | 6.0 m² | 6.5 m² | 7.0 m² | 7.5 m² | 8.0 m² | 8.5 m² | 9.0 m² |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 150 l | 90 cm | 360 | 380 | 380 | 400 | 400 | 420 | 420 | ||||
| 140 l | 85 cm | 340 | 340 | 360 | 360 | 380 | 380 | 400 | 420 | |||
| 130 l | 80 cm | 320 | 320 | 340 | 340 | 360 | 380 | 380 | 400 | 400 | ||
| 120 l | 77 cm | 300 | 300 | 320 | 320 | 340 | 340 | 360 | 360 | 380 | 380 | |
| 110 l | 73 cm | 280 | 280 | 300 | 300 | 320 | 320 | 320 | 340 | 340 | 360 | 380 |
| 105 l | 70 cm | 280 | 280 | 300 | 300 | 300 | 320 | 320 | 340 | 340 | 360 | |
| 100 l | 68 cm | 260 | 260 | 280 | 280 | 300 | 300 | 300 | 320 | 320 | ||
| 95 l | 66 cm | 240 | 260 | 260 | 280 | 280 | 300 | 300 | 320 | |||
| 90 l | 64 cm | 240 | 240 | 260 | 260 | 280 | 280 | 280 | 300 | |||
| 85 l | 62 cm | 240 | 240 | 240 | 260 | 260 | 280 | 280 | ||||
| 80 l | 58 cm | 240 | 240 | 240 | 240 | 260 | 260 | |||||
| SAIL | 4,0 m² | 4,5 m² | 5,0 m² | 5,5 m² | 6,0 m² | 6,5 m² | 7,0 m² | 7,5 m² | 8,0 m² | 8,5 m² | 9,0 m² |
Note:
Reference values are based on a rider weight of 80 kg.
± 10 kg body weight equals ± 20 mm in fin length.
The ideal length also depends heavily on rider skills, gear setup and spot conditions.









