Thanks so much, Janet!

We're actually in Mobile -- so Mardi Gras is a big deal here, so I may use that little tip as well.

The wrinkles were here when we moved in (as were the bleached out spots from the trichlor pucks) and haven't gotten any worse since we moved in, so I imagine they are both a product of the previous owner's care (or lack thereof -- it was a foreclosure, and they took as much care of the house as they did the pool!).

This is all VERY helpful and makes me feel better. The pool maintenance company we were using last year was pushing hard to get us to put in a new liner, but based on your responses, it sounds as if we don't have to until we either have a problem or want to.