Has anyone tried a new (to me) coating for decks called Restore Liquid Armor Resurfacer? I saw a display at Lowes a few weeks ago and picked up a brochure. It uses a special rough foam roller to put on a very thick coating that is non-slip and supposted to fill old deck boards with gaps as wide as 1/4 inch. I googled it and saw a video put out by the manufacturer that made it look so easy, but I am really suspicious of the disaster potential that could result when things don't go like the ad.