something like that on my main hatch but it's the "Doors" that are giving me trouble. And that's exactly what they are, doors. I would end up with this massive steel bar arrangement that I wouldn't know what to do with while at sea or at anchor. I could use it at night but I would have to swing it into place using the boom! Well, maybe not the boom but you get what I mean. I might opt for a steel cable like a net or something. I'm still working on it... Where are you at???