This post comes via Windborne in Puget Sound (I am a regular reader).
The product is from Fiberlay and while I haven’t tried it yet, the next time I drill a hole (soon) I am buying a can of their product.
Windborne has some specific advice on application that is worth reading.
I will post when I have actual results.
(Normally I don’t post about products I haven’t used, and since it is spring and many of you are trying to get your boats in the water I figure that the knowledge properly qualified is worth passing along.)