I do have a slider but have never used it. Only can think of two times I have ever come close to the fuel tank. Within six inches.
One was in a park and a truck was parked where I had to make a tight turn. It was 5:00 AM on Sunday and trying to beat the snow storm out of Michigan. A friend and I was going to travel home in case anything came up.
Other is my drive. The ditches are deep and road not very wide. I have a 18' ft culvert. My solution just got 3 pieces of pipe. 2 are 19' and one 14'. Plan on having over 30' culvert when I get home.
I have put a fifth airborne hitch and it gives u more distance and at least 75% better ride while towing.
Here is my TV 3/4 ton quad cab with short bed and 100 gal fuel tank.
I wouldn't worry about it.