I made this Paipo hydrofoil board with a one inch plank of Paulowenia wood. the dimensions are 3.5'X13"X1"
Paulowenia is used to make the Alaia and Paipo board before the invention of fiberglass and foam. The wind was 5-6 Knots, I was having a hard time getting the hydrofoil out of the water. Once the board leaves the water, I had to depower the kite due to apparent wind.