Same here. When water is flowing over the boat I've never seen a hatch that was really dry. Some come close. Most not. We keep dry stuff in dry bags, or if we are carrying a lot that needs to stay dry we dedicate a cooler to dry goods.While they certainly help, in a torrential rain or when running through rough seas water makes its way into the hatch. I too use dry bags for anything that needs it.
Those are some beautiful hatches for sure though