Thanks !!!I use these
https://www.etrailer.com/Towing-Mirrors/Ford/F-150/2021/KS69ZR.html?VehicleID=20215002235 and they are not perfect but have worked well. I used them on a trip from NY to FL without any problems. There is a little vibration at speed but you can still see fine.
You have to angle the strap around the mirror light but they grab tight enough so it's not a problem.