changing out the daggerboard trunks in an A-cat of ANY age costs a bit more than $1000.
I built my boat this way to allow for any future boards which might require more room in the trunk. Changing boards would be a simple process and the only cost would be for the slot at the top and bottom of the trunk.
As far as the Ben Hall wing sail, I saw some recent pictures of him sailing a soft sail, the word was that the wing pitched too much in any kind of chop.
