I know you guys have this problem too. The runs in your tights never seem to end.. Lol so here is a helpful tip to make them last longer!
before putting a new pair of pantyhose and put them in the freezer. No joke! wet them well and then rinse them gently close them in a zip lock bag and put them in the freezer. Once "frozen", immerse them in water and spread them out to dry. I know it's weird, but it works! Just try it.
Another trick is to roll them up your leg gently instead of tugging them up to avoid runs, spray with some spray starch. If unfortunately the hole is already there, then we avoid it : rubbing it with a wet bar of soap. Of course it would be better to use clear nail polish.
