Do I gluvit just the rivets of the rib or the rivets AND the seam of the rib? seems like I lot of Gluvit if I use it around the entire edge of the inside ribs.
Sure will with some left over probably. It really flows so if you can rock the boat, while it's setting you will get it to flow into all the cracks and crevices.
The 2 pound (or quart, whatever you wanna call it) was enough to JUST finish all the rivets and seams in my 18'. No need to paint over it if you're going to have a deck in the boat.