Can this be polished?

After almost 9 years of ownership, we finally decided to do something about the exterior paint of our 6 metre Minuet - now 38 years old. Don't know yet just what the finished treatment will be, but decided that stripping the old paint off would be the first step. We decided to start with the area between the rub rail and the belt line, as we were thinking we might polish that area and paint the rest for a two tone effect. The paint is coming off quickly with SmartStrip, and the resulting haze is removed with denatured alcohol. However, we have run into what appears to be a lot of sanding swirls. The non-sanded areas polish up to a nice sheen with Mothers Mag & Aluminum Polish - but does nothing to the sanded areas.

Can these swirls be buffed out and polished? Or, are we destined for a full repaint?

Thank you...Geo...

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