Just another option. I bought this bushwacker rocker guard for my JT I have on order. So i cant give a review, but I also have kids and was worried about the same thing. I like that it wraps up and covers the sill and all the angles in between...
My JT shipped yesterday. Then today I read this: https://jalopnik.com/train-carrying-jeeps-derails-in-ohio-1849734396
Hope that's not anyone here's truck. Good luck!