I have an old 1.25" rack at the moment. I am using a combination of these to make it work.
https://www.amazon.com/gp/product/B008CE09L6/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B077SHGWZM/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
I have a soft tonneau cover at the moment. I wanted to make sure I needed one before spending a lot more on a folding cover.
Hitch mount racks are great. Make sure you get a 2 inch reciever specific rack. Adapters for smaller add play and extend quite a bit from the truck.
Something like this may help. https://www.amazon.com/RETECK-Tightener-Anti-Rattle-Stabilizer-Installation/dp/B01KZ25Y26/ref=sr_1_3?crid=OX5H3DFMW2BE&keywords=hitch+tightener&qid=1562985636&s=gateway&sprefix=hitch%2Caps%2C412&sr=8-3