I have been using Jackery Saga 100 Solar Panel trays and when got my GFC V2 Pro this past Fall i tried a few different ways of attaching them to the GFC beef bars and solar trays. As the GFC solar panel trays appear to be designed for rigid solar panels, i wasn’t able to find a decent way to securely attach the flexible Jackery panels. This past weekend, i came across an online video that sparked an idea - which was to create a rigid frame around the Saga 100, then attach the frame to the GFC solar panel trays which are then attached to the beef bars.
I opted to use flat steel bars - 2 each which are 6’ long x 2" wide and 1 which is 6’ long by 1" wide. They are all 1/8" inch thick. I used galvanized washers/nuts/bolts - 5/16". The bolts are 1". The total cost of the steel, nuts/washers/bolts was around $150 at Home Depot.
I cut the 2" wide steel bars to 52" each - leaving right at 2" extended past the 48" length of the solar panels. I cut the 1" wide bar to 44" and used the remaining length to fit between the foldout “stands” on the back of the Solar Panel. So when needed i could remove them from the roof of the GFC and stand them upright on the ground.
The rigid panel/frame mounts flush with the beef bars and allows for air flow beneath the solar panel.
I couldn’t find anything on the forums for this particular item, so hopefully this helps others.