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Finished this thing today, only thing left is to put down turf and vinyl strips for speed. Whole thing is 7ft wide, tube is 13 ft long w/ adjustable jump on height courtesy of a 2x4 shaped hole the tube sits in. Just add a 2x4 and its 2in higher. The thing was a bitch to get level, but i used a sort of interlocking sheet method to keep each piece flush w/ the next. Cant wait to try er out.