Shaping an Alaia

Hi,
I’m looking to shape an alaia but need some help with the design. I want to make a performance kind of model; one that will hold when I do a bottom turn and would love to make a swallow tail version. I just need some ideas regarding things like concave, rail shape, the boards general shape, etc, etc.
Thanks

Start with a preshape

Go to Tom Wegeners Website. There are some dimensions and curves you can look at. That should help you.