I think for me it would depend on what I was towing it with. Smaller vehicle I would want a 7 foot wide trailer.
With my Dodge 2500 I have some good mirrors that let me see very well. I pull all kinds of trailers and loads. I own a 8 X 20 foot livestock trailer, a 8 X 40 foot TT , a 8 x 10 utility trailer and a 8 x 35 foot long goose neck utility trailer. I often have loads on the utility trailer that are wider than 8 feet and that I do not like. I like having the mirrors wider than the load.
For me it is about thinking ahead. Do not wait till you have to stop for fuel but rather you see a place that is easy to get in and out stop. It is nice when you have traveled the road before so you know where to stop. Interstates no problem but I like state highways when on vacation. There are guides that help with this.
You have to practice backing up and turning around regardless of what trailer. Of course the three rules of trailering is 1) don't back up 2 and 3 are see rule number 1.
Still sometimes you cannot make it without backing up so the time to learn is in an open field or empty parking lot. Just make sure you are comfortable driving the vehicle before you try to tow.
