Peter,
There a lot of good comments that you can follow on this thread, and I will add mine as well. The depth is obviously the determining factor whether or not to sand or fill. As the gunnel stripe is sprayed in the mold during the initial gelcoat process not after it might be a little difficult to tell if you are too deep or not, a good rule of thumb is that if you can catch your finger nail on the scratch it will be too deep to sand out. If it is just a surface scratch then just buff it out, finesse it works fine, not real aggressive so it may take a couple of passes to get the scratches out. Wet sanding is not necessary if you have access to a Dual Action sander, either or I recommend starting at 400 and working your way up to 800, you don't need to go higher than that as your compound will eliminate the scratch marks and bring forth the shine.
I will be holding a limited size seminar here at the plant October 16th, and I will be going over just this scenario, so if you have any questions don't hesitate to give me a call or send me an email.
Scott
There a lot of good comments that you can follow on this thread, and I will add mine as well. The depth is obviously the determining factor whether or not to sand or fill. As the gunnel stripe is sprayed in the mold during the initial gelcoat process not after it might be a little difficult to tell if you are too deep or not, a good rule of thumb is that if you can catch your finger nail on the scratch it will be too deep to sand out. If it is just a surface scratch then just buff it out, finesse it works fine, not real aggressive so it may take a couple of passes to get the scratches out. Wet sanding is not necessary if you have access to a Dual Action sander, either or I recommend starting at 400 and working your way up to 800, you don't need to go higher than that as your compound will eliminate the scratch marks and bring forth the shine.
I will be holding a limited size seminar here at the plant October 16th, and I will be going over just this scenario, so if you have any questions don't hesitate to give me a call or send me an email.
Scott