I'll just say the battery tender/battery jumper was not a solution for me. I'd hesitate on wasting your money. (Battery jumper was a great investment nonetheless) Often times my truck would start but not stay running until Ford preformed the gateway module fix for me.
Bummer, see if a different dealer can get you in. The issue with mine was the gateway module had "bent pins" and when they replaced it they replaced the battery too and no issues so far. Best of luck to you!
This cheap Bed Extender is one I use and is more than enough to do the job with my SUP and Sailboat Dinghy.
Also on the Rear window, I've been tossing around the idea of ordering one of these https://breezerwindows.com/
Just to add my two cents, my truck is at the dealership getting a "gateway module" replaced under warranty. I found another thread where this fixed their battery issue so I'm crossing my finger this works for me too.
Just wanted to follow up on this thread @AMCfoxbody as my truck is at the dealer now and tech diagnosed the gateway module at fault as well. Let me know if it indeed fixed your issue
I think it makes sense why you haven't found anyone who has purchased. The fender flairs are over $1300! Their stuff is too expensive for most people buying a $25k ish truck.
interesting find, I found this one as well and thought it was too expensive but now I'm considering it.
https://www.amazon.com/dp/B0BD4QMVD2/?coliid=I2IEP82EK9L994&colid=3FQO73Q1RWRT6&psc=1&ref_=list_c_wl_gv_ov_lig_pi_dp
If you are looking for a hard cover. I love this purchase. It was cheap at $389 and the product is strong and keeps the weather out. https://www.ebay.com/itm/165585601528