I've started using this technique that has been profitable: when I'm semi-bluffing and my draws brick on the river, I am faced with having to bluff a big river bet. I sometimes start sliding all my chips towards the betting line without any intention of actually crossing the line. This causes my opponent to do one of three things:
- Folds his cards before I can finish betting (unlikely but I've seen people give up huge pots this way)
- Also starts moving his chips all in (more likely at low stakes, indicates he has the nuts or is a loose gambler)
- Does nothing (most likely)
I'm just curious if this kind of tactic is legitimate in poker or considered poor form?