It just dawned on me that I never got back to you. I looked at my set up and it's exactly the same. Behind the chine there's a gap over the bunk like yours, although the stern does sit on the bunks on mine. There's just a gap between the chine and where the hull rest on the bunk toward the stern. At first I thought it was a bad design, then I though through the boat not being able to slide rearward on launch if the bunk was up against the hull near the chine.