I would stay away from a carolina skiff.
The only thing that will do what you want is a bay boat. The boys in the gulf of Mexico have perfected these boats that can fish the flats and go offshore 30 miles in 3 and 4 ft rollers. Many have tunnel hulls. Look up 2coolfishing and there are lots of discussions and boats for sale.
If I wanted comfort I would look at the ranger reata and FS models. 102 inch beam and full windshield.
This is of course just me spending other peoples money! But we are just dreaming right?!
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