To remove old caulking I use a blade with a handle( carefully,this takes a while so you don't scratch the fiberglass)
The knife/blade I use I found on amazon and I use it everyday for work in the HVAC trade is the Everhard MK46000 long cut ( it has a 3 sided tappering blade which makes removing clauking easy)
Then I use, Goo Gone (not goof off) using a terricloth rag, it's a citrus base cleaner that doesn't hurt the fiberglass to remove the rest of the caulking. I wipe down the cleaned areas with a damp terricloth rag to remove any left over Goo Gone for preping of the new caulk.
I use sikaflex 1a for caulking the trailer, I have used this product in the HVAC trade for over 20 years and have had good luck with it
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Les & Patricia
2006 22ft towlite (replaces 97 21TL)
2006 Toyota tacoma pre-runner 4.0 L V-6 quad cab
w/ 98 chevy Powervision towing mirrors
2017 Chevy Silverado 1500 5.3 v8 (replaces Toyota)
2 Hobie mirage pedal drive kayaks
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