[quent9]

Hand 1: lead flop. if you c/r flop, make it at least 60-75. as it is you look like you're on a draw and are inviting aggro opponent to bet you out at some point. his small bets are seem to be deliberately pricing in draws... which makes me think AA/KK less likely, but AKs is a decent possiblity

Hand 2: lead flop for at least 3/4 pot. often i'd lead turn too, but check behind is okay. on the river you have to call. you invited the bluff with your weak lead & check. whole idea of turn check is to call any reasonable river.

Hand 3: seems like a frustration play based on prior hands. reraise more pf. probably can fold after the min-raise. AKs would probably call, QQ would often bet out, and KK as you say would usually reraise pf OOP.