Building a dinghy connects you in a visceral way to all the shipswrights of days gone by.
I will be building a Devlin Boat design Polliwog this winter. For a rowing dinghy this has the advantage of a longitudinal bench. This will allow adjustments for when there are one vs. two in the boat. Not sure how well it sails. The D4 plans include plans for adding a dagger board, etc.