I'm making some new boat locker covers from what may well be the world's most expensive plywood. It's a mahogany board and I've given teak trims to it, then five coats of traditional varnish. So far so good. Here's the problem - if I try to apply a finish coat, I always get some small flying creature embedded in it. I've tried to control the environment by applying varnish in a workshop, in an office with no luck. Does anyone have a method of keeping these little creature off the varnish surface till it has dried enough not to trap them?