Have to agree with the posts that say no 5oz for exterior. After following Larry's directions on the exterior of the hull, lines were (and are) visable. I even cut off the excess from the visible line area and used it on a piece of scrap plywood to see if the results were the same. After following all instructions and drowning the glass in epoxy (under the assumption that I may have starved the hull area), the same "design" of white lines appeared. Larry did send me some 6oz FOC that I used on the deck.

The Raka epoxy, on the other hand, was great.