Over the course of the kayak construction I have found that it saves me a ton of work later if I mask around the cockpit coaming before sanding the underside of the coaming. When I didn’t mask I scratched up the cockpit apron badly and had to spend a bunch of time getting the scratches out of the apron before I could move on with the rest of the sanding.My sanding Achilles heel, the hatch covers. Above: My tool of choice for sanding before varnish. Your mileage may vary.Above you can see how torn up the masking tape gets when I sand under the coaming. Those scratches would be on the cockpit apron if I hadn’t masked.Rare action shot!Masking tape removed and moving on to the apron.Hull sanded and ready for the final coat of varnish (unless I screw it up and have to do a fourth coat to fix it).