[oxymoron]

Flopping a set with a pp on a board with an A or K at a loose table.

If we are specifically just talking plays I also enjoy betting out flush draws, OESD, a combination of either top pair, two pair or any pair from the blinds. Like you said when you hit the flush it makes it tough for them to put you on a hand.

OR if I know a TAG is raising from late position to steal I will check raise on the turn and maybe even cap and lead the river with absolute garbage. I have only done this a few times but it has always worked because I'm a very tight player and the TAG has to put me on a great hand. I would never do this against a fish or mediocre player though.