Frankly, I think asking how to play at or even near the bubble isn't necessarily looking at the most appropriate question or context. Once you're there, unless there are unusual circumstances, the better way to play is pretty clear - be more aggressively, especially against those people who tighten up just aiming to cash. However, it's also important - maybe more so - to ask how best to arrive at that stage with enough chips to take advantage of the tight play. .