I was on the side of an interstate near Dallas, on the side of a hill, on the side of a slope, with at least 20-30mph gusts of wind blasting past, in a 73 Econoline van, with a flat.
Every time, just as the wheel was about to get high enough to swap it out another dang semi would come blasting past and there would go the van, and there would go the jack, and there would go the wheel, right back onto the road.
I would be leaning in there with one hand trying to operate the (old time bumper) jack, the other hand trying to remove the lug nuts, and my shoulder, or any other available parts of my anatomy leaning against the van trying to keep it from blowing over again.
Maybe I didn't have any wheel chocks at the time, I don't know, but it about took me forever to get that dang tire swapped out.
I also highly recommend a couple 4x4x8 treated wood wheel chocks
I have two of them handy in the back of my truck anywhere I go ( most always )
Just ahead the wheel well on both sides there is a wheel chock, beside the water jugs, which need filled with summer coming on.
I prefer to have my Ruger lock on the spare tire (that should make somebody wonder where is my Ruger
NO, I don't go armed.
That hard drive magnet is especially handy too when working on some things
Yes it is a work truck, and full time transportation
I still get about 22+ MPG
You could greatly scale this down depending on your needs, but my advice for the room in the space behind the bumper seat would include a 4x4x8 wood chock