I am hoping to create a thread to challenge your creative instincts. I am looking for opinions on what you would do if you bought a tinny that someone had modified like this. The like this included a piece of OSB for for the lid (removed and not shown).

I initially thought that I would just fill it with foam and put some aluminum back over the hole. After pricing the foam and the cost of the 1/8" metal I am open to suggestions.
Just an ugly patch is expensive. A new top for the whole 67" seat even pricier. A patch with a fiberglass overlay somewhere in the middle.
Just as a side comment it looks like two different grades of foam were used. Love to hear any comments about that.
At the current moment I am leaning towards supporting the front an back edges of the seat and builing a storage box with a decent lid that flushes even with the existing seat top.

I initially thought that I would just fill it with foam and put some aluminum back over the hole. After pricing the foam and the cost of the 1/8" metal I am open to suggestions.
Just as a side comment it looks like two different grades of foam were used. Love to hear any comments about that.
At the current moment I am leaning towards supporting the front an back edges of the seat and builing a storage box with a decent lid that flushes even with the existing seat top.