[joelmick]

If you vary your bet size based on the strength of your hand, this can be a huge tell for your observant opponents. (For example, if your smaller bets represent medium strength hands, your observant opponent can steal-raise frequently in this situation.)

To avoid this, you typically choose one bet size based on the texture of the flop, and you either make a bet of that size or you check. (So in the case of a flop of KQ8 with a flush draw, if your standard bet is the size of the pot, then you should just check you KJ or KT in early position. But your standard bet size for a flop of K82 rainbow might be on 1/2 or 2/3 the pot, so then you might bet KJ in early position.)

The more complicated alternative is to have more than one bet size for a certain flop texture, but to also make the small bet with some of your strong hands. So, on a flop of KQ8 with a flush draw, you might bet full pot most of the time, but bet 1/2 with some of your KJ-type hands and also with some of your good and great hands such as AK or sets. I personally do not like this approach. First, it is more complicated, in that you have to remind yourself to make the small bet sometimes with a strong hand. Also, though you gain some equity by being able to value-bet your medium strength hands, you also lose some equity by giving your opponents cheaper turn cards when you make the smaller bet with a strong hand, so it is not clear that you gain anything overall.