Re: deck sealer
Its mostly on edges from using a scraper to remove the old carpet glue ....
Do you have all of the carpet removed and old glue off? The best way to remove old carpet glue is to sand it off with a belt sander and a 30 grit belt.
Use epoxy resin to seal your decking, you can get some SM Fairing compound to mix with the resin to fill in the chips and cracks.
I used epoxy resin and SM fairing compound on my old decking after sanding the old glue off and it worked out very well:
Before sanding:
After sanding, sealing, and fairing:
4 coats of epoxy resin is like a sheet of glass between your decking and carpet.