Great tips/ advice, thanks to everyone! I learned the hard way on my Nike X fins using the water based FnF. They are thin, fairly soft balsa and looked like Fritos when they dried! Glad I cut two sets, coated both sides at once on second set and they are fairly straight. As a couple folks noted, the FnF does make a dusty mess, had to move my sanding operation outside!

Is there a difference between Aero Gloss sealer and fillercoat or is it the same product?