I have not been overall impressed with the Topper EZ Lift. I think it is a great idea that feels like execution never progressed past beta testing. It would have been more helpful if they provided more pre-purchase insights; for example, they could let people know that the flange of the topper will have a tendency to sag when lifted and if you are buying a topper specifically to use with the lift, a reinforcement kit is a good option. My A.R.E. CX topper was available with an HD option that added 80/20 extrusions between the roof and the rail flange. I would have added that if I knew about the issue.
I spent a lot of time brainstorming both how to deal with the sag and support the awning when in the up position and decided to build what is essentially jack walls out of 2x4's. They are 72" in length and 16-1/4" tall. I raise the topper all the way up, then insert a jack wall on each side between the bedrail and the topper bed flange, then lower the EZ Lift down onto the support wall. They lock down tight and the entire thing becomes much more rigid. I just tried them out this past weekend camping with the wife and it was pretty windy; too windy to actually deploy the awning but, the topper did not budge all night.
I will try to get a photo of the setup. My wife thinks it looks a little Beverly Hillbilly so I'm going to paint the 2x4's black.
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Thought about doing something similar and make removable hard side panels in stead of the canvas. I would have to figure out the rear opening and tailgate. I haven't even slept in mine yet so i may be rushing things.