I want to drill some holes thru the left rear corner and the right rear corner of my Element's roof in order to install footings (Yakima Bolt Toploaders) so I can install Yakima HiRise Towers. Two 5/16" holes are needed at each corner. Does anyone have any experience drilling thru the Element's roof? I'd greatly appriate any advise or instruction you can give me. Many thanks!
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