And I just looked up the Armor Coat spar var. Not a lot of detail found on first pass with Google, but Canadian Tire says it creates a tough plastic finish. That is absolutely what you DONT want, and implies that it is a polyurethane spar var, which you also dont want. CT also brags that it is low VOC, which means that it is, by definition, complete crap. Order some old school spar var from a marine distributor like Jamestown Distributors or Fisheries Supply. Dont screw around with DIY crap from a tire store.