I appreciate all the thoughts and suggestions.
I’d also like to try to bring the discussion back to *how* to take action, not whether.
But to review the specifics first, so that we’re not arguing over details which are not clear:
* When this first came up a few months ago, everyone was reminded about the rules on shuffling and cutting.
* At the time, it was not clear how an edge was being gained, or even if one really was—only that it was suspected to involve the handling of cards before the deal.
* It was important to ensure that suspicions were not based in jealousy of the player’s success or incomprehension of his skills (the Stones defense of Postle initially).
* Another trusted, impartial member of the group who is a winning player was enlisted to help observe the suspected player so that it wasn’t only the host’s word against the player’s, and to deflect any suggestion of chagrin/jealousy motivating any findings.
* There have been about five “watched” games; this game happens twice monthly. This is not a scientific inquiry, but I have a ton of faith in my fellow watcher’s integrity and objectivity.
* Both of us concluded that there is an issue with the player shuffling in a way intended to previews cards for him, which gives a thinking player a significant edge.
* The player does not shuffle with a standard two-hand riffle. His method involves holding the deck horizontally with one hand, with the cards facing the shuffler. The other hand picks up bunches of cards from the deck and rapidly mixes them forward or back, allowing a view of multiple cards, and allowing some cards to be roughly positioned.
* This overhand technique sounds weird, but it is not an uncommon method among people who are bad at shuffling correctly, or just are casual about card handling. (This player certainly can shuffle properly if he had to.)
* His edge is conferred whether the cards are cut or not, though the player clearly prefers to try to avoid cuts.
* Example: If you see while shuffling, or arrange it as such, that there are two black aces and a bunch of diamonds in the bottom 1/4 of the deck, that would give extremely valuable info either way. If it is not cut, aces and diamonds can be discounted. If it is cut, you can significantly adjust your strategy depending on what winds up in your hand and on the flop.