If considering the flaps, consider where the tail pipe is on your tow vehicle. I had a Rock Gard I used with my prior truck and bumper pull travel trailer. I quit using it because it was a pain to attach to the receiver hitch. Fast forward.
New truck and now the fifth wheel. One day i decided to try the flaps again. Attached the old receiver hitch. Attached the mud flaps. Attached the 5er and headed out for a 300 mile trip. All went well, no problems at all, until I went to unhitch and then found that rubber flap was directly in front of the truck exhaust pipe and the heat of the exhaust completely melted away about 3 feet of the flap, and on the front of the 5er was spots of rubber clining!
Well, I took off the flap and gently placed it into the campground dumpster. I can never use anything like that on my current truck unless I diverted the tail pipe somehow.
Just check out your truck to make sure nothing hangs directly in line with the exhaust pipe.
Word of warning to the unweary before shelling out money!
To plant a garden is to believe in tomorrow.
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually