Andinista,

As a fellow engineer, maybe you will like the kind of information about foils available at Tom Speer's website.

If you want to search the web, the following multihull series are foilers:

Hobie Trifoiler (small trimaran, L shaped foils)
Windrider Rave (small trimaran, T shaped foils)
Catri line (cabin trimaran, Bruce foils mainly)

You may also like the site of the International Hydrofoils Society.

And perhaps you will be interested in the only South American shipyard building hydrofoil boats - Multicascos, in Maceió, Brazil. The first Catri 27 is mine.

You may write to them in English o en tu idioma (los dueños son Argentinos), ou em Portugues, porque eles vivem no Brasil há décadas.

Sds.
Luiz Schechter