What is the current wisdom on adjusting the saddle? After hanging my road bike on the wall for 5+ years, I decided to start riding again. At one point in the interim, I loaned my bike to a friend for some visitors to ride for a day or so, and when I got it back, the height and fore/aft of the saddle were all reset.

I've looked online and see various methods with critiques trashing them and wonder if there's any good rule of thumb to follow these days.