Hand 1. Yuk. I'm guessing his range is JJ-AA. If you weren't beat pre-flop you are now. I posted a similar hand a few weeks ago and consensus was I was beat.

Hand 2. I would have raised pre-flop, but depending on how aggressive post-flop the maniac is, calling isn't terrible. Tightie could have QQ or AA. I would have expected a raise, but maybe he was smooth-calling with the same thought process as you? I think AQ more likely. Given the stack sizes, it's hard to make a meaningful bet here, without being pot-committed. I think a push is good.

Hand 3. The flop bet is low even for a rainbow board. I think something like 2/3 pot is better. 1/3 pot makes it too cheap for flush draws and AX hands to stick around.

On the turn, you still have to worry about flush draws. I'm betting around 2/3 pot again.