Explaining my own statements.

Low aspect daggerboards do not take well to being raised. So our current Blade and Taipan boards are best left fully down in all conditions except survival ones. Here raising the boards just a little can have a settling effect, but again only in really heavy conditions where you can otherwise not hold proper sail shape.

Additionally, with low aspect boards it is also always better to raise only 1 board a little while leaving the other fully down. That is if you really have to raise some board. This way you reduce area and sideways resistance a little (because you have far too much for the conditions) while not impacting too much on efficiency (aspect ratio)

High ratio aspect boards are different in this. Because they maintain sufficient effciency even while raise significantly. However their advantage is also their drawback. They are nice and firm in sideways resistance (good pointing), moreso then the low aspect boards, BUT in strong or unstable conditions they are TOO firm and lead to tripping and thus need to be raised. Luckily that can be done efficiently because they have a high aspect ratio. If this was not the case then no builder would ever use high aspect boards.

I hope this helps.

Wouter