ORIGINAL: BobCo19-65
If I have a new string, especially dacron, I check it often especially at first. Then every few sessions or weeks after that. But if I'm using a new FF string, I set it, check it a few times at first (maybe up to about 200 arrows or so), and don't worry about it much (I still check it once in a great while) unless I see poor arrow flight, or vibration developing.
Ditto. with glass over laminates. When I use an all wood bow, i make sure to have my string set to where it settles after being strung. Depending on the wood, they will set just a bit after being strung.