Every Day Dan: I'd rather not glue the Dacron knots once they're in the spoon for fear of gumming up the hole in the spoon making it a lot harder to swap hardware down the road. Instead, I'm building the loops separately (e.g. cutting 7" of Dacron, double knotting it to form a loop, trimming and then rolling the knot in a dab of Aquaseal--or Superglue--before allowing it to dry overnight. Then threading on a hook and storing it a small Ziploc, or putting it onto a spoon body). But there IS glue on the two Dacron 'legs' just below the knot. This could be reducing abrasion.
I've not been tightening the knots with pliers. Instead, I'm opening up the loop from within, hooking both index fingers through and pulling in opposite directions. In those cases where the two granny knots weren't quite touching one another, this procedure ensures that they end up merged into one bigger lump.
I have to caution that I've not fished the above setup, I'm only testing it with handscales and imported beer. But I'm now getting the Dacron loops to break at 20lbs which is plenty more than I'd ever need.
Sugartooth: I was thinking along the same lines as you, namely "double looping" the Dacron loop to the spoon to spread the stress a little further.
Ralph H: do you have issues with the Superglue dissolving or wearing out? I no longer glue Biminis with ordinary Superglue. If in the salt or an extreme fishing situation, I stumped up for a small bottle of Loctite 406 (thanks to the suggestion of the late Max Garth). That is a special formulation Superglue that marries well to gelspun polyethylene (a.k.a., braid). I suspect, but don't know, that the 'ordinary' Krazy Glue from the corner store will work fine with Dacron.