Well, you are probably going to get a variety of responses. Funnily enough, people have almost the same fervor for their calk as they do for their anchor
I am assuming that enough time has passed for the 5200 to completely cure. In that case, to remove the mount I suggest using a thin blade to CUT the 5200. I have used mechanical means (scraper and wire brush) to clean off most of the old caulk. Then I have resorted to "better living through chemistry", having used a number of solvents to remove the final remnants. One popular choice is "anti-bond" sold in many marine
stores (look for the red cap). Be careful about some solvents (such as MEK) which can soften gelcoat
, the inner surface of your lungs, etc....
Removing 5200 is a pain, but unlike many sailors, I LIKE 5200 (in its place). It's adhesive
properties are fantastic.
However, if I anticipate the need to remove a piece of equipment
, I usually use 3m 4200 (a polyurethane sealant
with less adhesive
properties than 5200).
One final thought for the DIY cruisers out there. To work with any nasty chemical, I have a mask with a filter for organic solvents. It cost only $20 and it filters out enough that I can't even smell some of the yucky things I have been working with. The one working brain cell I have left is very thankful!