We have a three board set up with rabbit edges. The lower board has the higher part. The bottom edge has a piece of weather
proofing on it as well as some angle. We like this arrangement as it seems to be sea friendly when underway we can just drop in two most of the time and still get some air below. I don't think this would be possible with doors, but would be open for an explanation on this if it is easy to do I might consider it. We had a 57 knot
storm last month from the wrong direction and we didn't have any leaks
. But mucking with the boards when we had to go out was a bit wet. A door probably would have been quicker and therefore drier.
To make the rabbit edge is very easy if you have a joiner or a router.