Nothing has worked for me. I accept i need to unload and rinse out the bed every once in a while. My gear is in pack boxes which are well sealed.
The biggest intrusion point is actually the tail gate. If you hang cloth inside the tailgate you will see a lot of sand gather between the gate...
I'm not saying I'm a redneck. But. Plug from rear center under the rear seats and mounted inside just below the rear slider window. Easy access power without having to do all the upgrade and tearing up the dash.
If your wishes come true. And s v8 JT is offered. You will fondly remember when your JT only lost 50% value in 3 years.
It will be like early JKU with the 3.8 in resale.
If a mojave x was selling near list a year ago at 68k and new left over JTMx can be had for 48k today (got mine just over 50k in dec) that 68k truck a year ago might be worth 40k today( used miles etc) it's brutal. Keep it.
Jeep being a corporation. When will they add a Morgan and Morgan ad when the air bag deploys?
To original question I am not aware of any way to disable their ads
Find a local group and get out there. Let em know you are new to it. People love to help. Friendliest people in the world are found on trails.
Don't fall into the trap of changing stuff till you have some time with it.
I see you are in Florida. If you are mid.state. hit ocala forest...