Availability has so much to do with price the how much quality you may find. This brings to mind the Hobie 18 option. Although it has dagger boards, they do tend to push up when hitting sand. (from my minor experience, hitting sand about three times) They have very rounded tips that help them to push upwards.

The TheMightyHobie18 is a great boat with enough buoyancy for some extra gear. They are easy to sail and remain quite stable when the conditions become tough.

GARY