If you're using Aquaseal, be aware that it is a) fairly thick, b) has a long cure time (24 hrs), and c) likes to creep and run all over the place (albeit slowly.)
If you need it to penetrate, mix it with Cotol 240 (I think that was the number) at a ratio of about 3 or 4 parts Cotol to 1 part Aquaseal. Mix 'til it thins out (the adhesive takes a while to go into solution), and apply. The resulting bond will be a very thin skin of urethane, and the mix will cure in about a half hour.
Do not use the "filled" or thickened Cotol (has a whitish color) that comes on the blister card; instead, find the 4 oz. can of unfilled Cotol (water clear.) The filled stuff doesn't work for crap.
I used to use a *lot* of Aquaseal and even more Cotol for keeping my diving drysuit something less than wet. Problem solved when I anted up for a new drysuit (2, actually.)