I think the daggerboard is a more robust solution than a centerboard
but, centerboards on the gunboats that have them are fused - in case you hit something at speed
can the daggerboards be similarly fused - do they break away or something?
certainly the daggerboards have the potential to do some harm to the hull if they don't break away.
and Boo -Yah.., with respect to the question you posed above..., i've crossed the atlantic a couple of times on mono hulls.., and one of them was a pretty luxurious boat.., but the gunboats are more comfortable on the ocean than any monohull i've been on