The amount of angle on an A-Class daggerboard is only limited to the maximum platform width that must include the boards fitted in their pockets with the tip flush with underside of the hull. Due the slender hulls, there is not much more room than about 5 degrees angle.
As a matter of fact the boards of AHPC newest boats were made by Peter Saarberg and were within 1 mm from the maximum platform width upon measurement. Luckily a piece of the top part on the outside on both boards broke off by accident to keep it well within the class legal width limit, such a lenghth those boards are now.
In the boat area one could see that the tendence for dagger boards is defitely longer and narrower with a 1:10 w/l ratio.