I got my Trifecta from Autoanything yesterday and found it really is as easy as they show to mount it. But I do have a question.
The front (cab) end hand screw clips fit nicely into the rail, but I can't tighten the T-handle screws because as they get close to tight, they interfere with the rail itself. Extang includes a set of brackets with their cover that attach to the rail and make a perfectly good mounting point, so it was just another 5 minute step to get it installed. I did not have the same issue with the rear (tailgate) attach as they are spring compressed rather than T-handle screw connector.
Question is; Did you have to use the extra bracket to install your Trifecta on 2010 AC 6-foot bed? Or did you muscle the T-handle past the edge of the rail? Or, did you remove the T-handle and use a wrench?