Rolf,

the way I we've built "timber foils" before is.

1. Select straight grained timber with good strength to weight ratio (ie cedar) of say 1" (25mm thickness).

2. Cut into narrow strips, reverse alternate layers glue and clamp back together.

3. Place whole thing in thicknesser and dress until "flat"

4. Laminate solid glass strip up to same thickness (de-bulk and bag)

5. glue glass to front and back edges.

6. Machine to shape (you want solid glass lead and trailing edges)

7. Create rebate for uni strips at maximum thickness point. Note unis can be tapered out between 50mm below hull exit and lower end of board.

8. Fair over unis.

9. Apply laminate.

10. Fair and paint.