So which is the superior method for home building dagger boards, rudders and other relatively "flat" panels, vacuum or pressure?

For pressure I'm assuming you could put the part between two flat plates and pile weight on it. No? Yes?

Inquiring minds...

And I got this in the "mail" this morning. Anyone know anything about it? http://www.jamestowndistributors.com/userportal/main.do?&campaign=email060512