The substrate and construction method of the area you’re varnishing will affect your choice of coating. Two-part systems – such as Perfection Plus – are not suitable for application to flexible constructions. Areas where there is considerable foot traffic or harsh abrasion, such as gunwale rails and coaming sides, will need frequent repair to keep them in pristine condition. While the two-part, Perfection Plus systems offer excellent resistance to abrasion they can still wear through in excessive circumstances. As conventional and premium one-part systems are considerably easier to touch in and make good than the harder two-part systems, they are more suitable for these areas.