I have two set of boards on my Stealth. Long and short. In fact the original short ones are the same as the rudders, all sourced from 49er rudders.

I keep them in my trailer box just in case, if I break a rudder or a daggerboard I have two spares...

The big difference between the two is that the boat is way quicker to lift a hull with the long ones. I've used the short ones only twice: Once when it was honking a good 25 knots with gusts to match and a second time combined with a smaller main when I put my two sons (14 and 9) on the cat by themselves.

I'd say there is value in short boards