Doe's anyone have a suggestion as to what kind of glue to use to hold the Sunbrella brand outdoor cloth to the 1 piece slate? I am not to worried about the sides of the slate as they will be glued and held down by the rails and rail bolts but I am concerned about what to use in the pocket area. The table is on a deck and is 100% exposed to the sun,wind,rain and snow. Thanks for any help.