The way a trailer looks can be helped a lot when you keep the yard clean and well landscaped. The curb appeal of theses types of houses says more about the owners than it does about the way the houses were built.
First of all, mobile home skirting is a must have. Without it, you can make the home look only so good. Regular metal mobile home skirting is not that pricey and it improves the looks of the home 100 percent. I've seen some people plant bushes all around the home and you can't tell whether there is skirting or not until you get right up on the house. This is better than nothing at all.
I know using bricks as skirting is more expensive, but I think it looks the best. However, cement blocks are good too and they don't cost as much as the bricks.