The best alternative to hydrofoil: 

- Safe to use - does not lift the board off water unless you really want it.

- It generates lift so your board is going like you have lost 20 kg of weight. Sail at lighter wind or with a smaller sail.

100% carbon. 

27 cm deep

36 cm wing span

Fits Power Box - fin box with one screw. M6 thread

 

Shipping:

USPS - free but unreliable. 1 out of 50 packages delivered 1-4 weeks after estimated by eBay.

UPS - $9 flat rate. Delivers every package as promised on the listing or faster.

UPS 2nd Day Air- $20 flat rate. Fast and reliable. 

UPS Next Day Air - $40 flat rate. The fastest and reliable.