You could try doing test a spot with 800 dry, 1000 wet, compound, polish.
I know of some who have gone to 400 dry and then worked their way up.
To remove the 1000 grit marks, you're going to need an aggressive compound than can remove 800 grit marks (there are some out there for boats), with rotary and wool pad.
If you don't have the aggressive compound then use 1500 or 2000 grit after the 1000 grit and work your way up until the sanding marks can be compounded out.
Alright I just don't want to burn thro the gel coat with 600 it seems like a lot even 800 does... How will you know if you burnt thro it?
Gel coat is much thicker than the clear coat on a car and you will have much more to work with.
I know of some professional boat detailers who regularly start with 800 dry on very oxidized high end boats and sometimes go even lower.
You can always try a small section and see how it goes.
If you don't get an answer here you can check out the Marine 31 forum or join some boat detailer groups on FB (I'm a member of a couple of them) and post the same question.
I'm having problems with just the back part of the boat 1000 grit wet sand and compounded with rotary and still looks like this any suggestions?
That looks way better. I agree with a test spot for the back quarter. You may only be able to get 50-75% improvement. Wait a minute isn't the back quarter going to be under the water? Go boating!
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Originally Posted by asap2stacks
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