I could probably ask this question at the local boating shop but decided for feedback from tried and true users.
I have some hairline cracks i would like to attend to. I have found in some boating shops a bog like mixture they say is gel coat..should i buy this or stick to buying a more expensive gel coat and hardner..if the bog like stuff has been tried and successful.. Question: do u V cut it with a grinder before filling like gelcoat the feedback I have recieved from the shops is to sand it first..have found a site on repairing gliders and apparantly sanding has not been successful.
cheers