The only way to remove 5200 is to mechanically break the bond, i.e a good x-acto knife.
It does beg the question as Pete mentioned. "why do you have to get in there"? This could be the start of a very interesting thread. There are alot of people that at some point, will be faced with this situation. How do you do this without destroying a perfectly good floor and repairing it to look like original deck? I can see this being more of a surgical extraction than "we're rippin the floor out anyway" senario.
Thanks all, that confirms my suspicion on the deck. Original reason was to inspect that area and recover a pelican flashlight that rolled down, but that was when I though there was a hatch (based on the line). Tank is good so guess I just go buy another light and call it a day :cyclops: Again thanks to all!