T - 3 days
Long day and not much progress.
I just welded on little tabs that I bent. They seem to be sufficient. I had some leftover fiberglass rope so I pulled out about 10 inches of thread and used it to tie the two ends together.
Bad closeup of the tabs.
I spend a lot of time thinking about how to latch the door shut. I have all night and tomorrow at work to figure it out. Any suggestions would be greatly appreciated.