We installed a truck bed rack onto a 2020 GMC Sierra with preexisting Retrax XR tonneau cover. The truck bed rack system is called an Overhaul manufactured Yakima, this system has a load capacity rating of 500 lbs and can be raised up and down for desired height. The installation of this rack was easy to do as the racks slid into the Retrax's accessory bed rails.
We installed a track style canopy rack with water sport accessories onto a 2020 Chevrolet Colorado. The roof rack system we found that works best for fiberglass canopies is made by Rhino Rack. This installation required us drill through the canopy and install the track using bolts, nuts and silicone sealant. Once attached, the feet that we used are Rhino Racks RLT 600's paired with VA 165B crossbars which have channel mount capability. The water sport accessories include a Thule's Hull-a-port XT kayak carries (channel mounted) and the SupTaxi. The weight capacity for this setup is rated for 165lbs.