Here are photos of the floor before and after I pulled off the Treadmaster. The flooring was held on by silicone rubber - lots of it. Whoever installed the flooring didn't come off easily - and it didn't. Actually, could have been worse. Interestingly, under the Treadmaster was a nicely masked off area of grey non-skid. So I'm wondering, was the Treadmaster an owner mod, or possibly a factory option?
With the dark brown Treadmaster out, the front of the boat looks lighter and brighter. So, I'm thinking about going with either "light grey" or "sand" colored Treadmaster. For that matter, could just repaint the grey non-skid. This would leave a bit of an elevation difference between the teak and holly cabin sole and the forward cabin, but not much.
Decisions, decisions!
PS: I was able to remove most of the silicone with a scraper, but there is still some residue, especially in the non-skid area. Getting this off so something else will stick seems like a challenge. Any thoughts are appreciated!