Try rubbing the transom with Acetone with a cotton rag after cleaning it with a weak acid like vinegar and washing it off. Acetone will reactivate the vinyl gel coat so be very light at first to see what happens.
If it gets a little 'orange peel' like texture some fine grit sandpaper (#600 - 1000) will smooth it out.
Take it from there, wear gloves and see how it goes.
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
Everybody has one:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.