It takes such a long time to get an accurate winrate, how do you know when your play has improved in the short run?

It would be easier to improve your game if you could determine quickly what works and what doesn't. But you may just get lucky, and the short run feedback your getting doesn't necessarily say much about small edges.

So if you try coming over the top of your opponent it may work 3 times in a row, but it is a bad idea in the long run for example.

Anyone have ideas about this? Does your stack seem to go up a little bit more consistently or a little higher at the end of the session (or something else)? Or are you pretty much reliant on the records you keep over the long run -- thousands and thousands of hands, before you know if something in your game is working better?