Carl,

Regarding the inclination of the foils:

As far as I know, Bruce demonstrated that if the foil's lift points towards the center of sail, the boat is stable when sailing fully foilborne.

As a consequence, the daggerboards inclination angle is a function of mast height and total beam.

If the mast is taller, the boards should be more inclined (closer to horizontal) and if the mast is lower, the boards should be closer to vertical.

Wider boats require less inclination, narrower boats require more inclination.