Swing out with a catch to keep the door open. Double freezer latches Top and bottom to hold the door closed. When your on the boat fishing use just the bottom latch, if you fall over and need to get in just reach in the scupper and open the door.
I like to picture frame the door in stainless steel so it cant blow in if a wave smashes against it Also.
back when I was building sporty's , the doors always swung out . old style latch with a keeper . if cockpit fills from backing down ,mate can open door to release water. if you hinge door to swing inward it fouls opening bringing fish in and also crowds area near fighting chair.