I'll bet there are a LOT of people with some experience with this thread's topic.
Last weekend I had a blow out on the highway. Some thoughts from the experience:
The Harbor Frieght aluminum racing jack works fine on a formula car, but it was sub par for lifting my enclosed trailer. I might put some thought into purchasing a bottle jack to live in the trailer. I'm open to suggestions.
Many thanks to the anonymous person who informed me that I had a flat. I think they flagged me soon after it happened. I'm grateful. I didn't have any fender or wheel damage. I wish I could thank that person in person. I'm sure I would have driven a bit furhter before realizing I had a problem.
Once fixed and back underway, I realized that I still had a long way to go and didn't have another spare. I decided to make a side trip (2 hours) to get two spares. I like the peace of mind I'll have with two spares.
Changing the tire on the highway wasn't fun. I'll be interested to hear suggestions about preventing incidents like this.