Have a few small spots on the keel of my fibreglass half cab boat where the gelcoat, or at least what I believe to be gel coat has been scratched or knocked off.  The fibreglass underneath is solid so just want to touch up these spots. The hull is white and the biggest spot where the coating has come off would be no bigger than 100mm x 50mm and a couple of smaller spots.  The boat gets trailered so whatever I used would need to be a bit tough.  Anyone on here have thoughts on what I should use and where I may get it.   Looking for the easiest option here.  

Looks like a great idea rick.  Thanks I will check these out.

Hi mate don't waste your money it does nothing it claims on their add.the only thing I found that it does do is join string together.i fit blinds for a living and we join new cord to old and pull it through and it works a treat..

I dont think rick read binnsy"s post properly.  He is trying to fix his boat mate, not his broken  tiddly-winks.

And just for the record , I have never played tiddlywinks in my entire fukin life 

Saw a boat repair guy on you tube use this stuff.  Worked a treat, might give it a try.