Fully ready for judgment on this but I keep a spreadsheet of masseurs I’ve seen. I’ve established a rubric for scoring them and the top two scorers are my regulars. When I try someone new and they score high on their initial session, I slot them in and hire them a couple more time for consistency. If they consistently deliver at that the high score, they replace whichever of the top two may have been lower than their score.
not to say I discard the lower scoring therapists. I just don’t hire them unless my top two are busy/out of town, etc.