OK- So 3M 5200 definitely will do the job, but many Hate when it comes time to have to remove something set in with 5200 or cringe when they need to remove it from something.....
I know Dan isn't fond of it and typically will try to steer away from using it because of the above...
I have used it many times above and below the waterline with excellent results , but it is right that it holds so good that you can literally use it to bond your deck to your hull , ( and as long as you didn't just apply it over a dirty surface) and take the screws out and it will not separate !
3M 5200 is a Polyurethane type Sealant. Other type Sealants are SMP (Silane Modified Polymers) and Polyether Sealants. Silicones are primarily a flexible sealant NOT a glue type product.
OK so now to the supposedly headache reliever for 5200.............. How can you remove it or release it....
If you will god to this site an do the reading, some claim this is how to do that, but my opinion is , these are NOT very good answers to the problem as some make it gooey an some only work some what. Here's the site; www.boatingmag.com/marine-solvents-for-removing-5200
In my search for the best answer to the problem, I came upon a New product called; Unhesive 3M 5200 Remover
$14.95 + $6.95 shipping in 8oz. spray bottle
Go to this site to read about it and Watch the Video; https://store.marine...hesive-remover/
If this works as shown, many of us will no longer be afraid to use 5200 !!
I'm sacrificing my $21 and volunteering to try it for our good !! I have ordered it an when it arrives, I will be doing some tests with it.
When finished, I will publish a follow up article, to let everyone know if it works as advertised.
The Dr. Ann 1975 R-236