[pfapfap]

The problem with trying to get someone not to tap the tank is that by doing so, you are tapping another tank. I've tried to talk people out of repeatedly question someone's play, and usually get responses like, "I'm just curious how he can play those card," etc. The idea of wanting players to play bad cards and chase bad draws is lost on them.

I agree with trying to indirectly address it, sticking up for the player, diverting attention, etc. Maybe start playing more boisterously, spread feelings of goodwill, etc.