Welcome Terri. I too am solo and tow an 18ft. TT around during the summer on my days off from work. So like you, my campgrounds are limited to where I can go due to distance and time. But I make the most of what I can. Fortunately I live in a part of Northern Michigan were there are a number of State Parks within an hours drive of me, so I do have a number of choices, but there are some that I don't reeally care for, so I tend to stay in the same ones mostly.
You will get used to that trailer being behind you and if you ever get too comfortable, that's bad. That's when a person becomes compliant. So a bit of nervousness is good. Happy traills.