hand 1: you're missing out on huge value by not 3-betting this preflop against the vast majority of opponents, so I'd do that. In a reraised pot, this becomes a dream flop and one that you won't ever get away with at 100bb deep (nor would you want to). I'm not really a big fan of the c/r in this spot because it more or less turns your hand into a bluff I feel, unless villain will call down with a worse ace frequently. You have to find a fold somewhere this hand, although I'm not really sure where to be honest. I can't imagine you ever being good here. If I didn't reraise this pre, there's a good chance I would be leading this flop but it should also be noted that I do this quite frequently and I feel it works into my game well.

hand 2: easy call. As much as I am an advocate of leading on the flop, I'm not really a big fan of it here. I PREFER the action to go something like this: checks to button who follows through (if he checks behind, no big deal), BB calls or does something donkish like min-raises, hero pushes or puts in a giant raise/reraise depending on what has happened that we would also make with 55/66, and we scoop up the dead money in the pot. Of course we also have the nut draw which is nice, and it's possible we can get a call from some grossly worse hands, ie the BB having 79cc.

hand 3: see hand 1. cliff notes: reraise pre, play goot post-flop. The always sexy double check/raise with your obvious 1 pair hand is kinda baller in a way though (ie its so NOT baller that somebody might be thinking on the second level and think that it actually is baller, or something like that).