$450 effective stacks

Hand 1:
MP is a rec who recently won a big pot, has been opening a bit.
Hero has a tight image mostly folding. Previous hand Hero lost KK to 88 all in preflop which got shown.

MP raises to $15, reg calls, Hero makes it $50 in BTN with QJ
both call

Flop:
K66 (Pot is $155)
checked to hero, Hero bets $60, only MP calls

Turn is
5 (Pot is $275)
MP checks, Hero bets $130

$700 effective stacks

Hand 2:
CO has been opening quite a lot. Young guy.
Hero has been folding for about 90 minutes straight. 30ish WG

CO raises $15, everyone folds, Hero makes it $50 with KJ from Big blind, CO calls

Flop
Q74 (Pot is $100)
Hero bets $50, CO calls

Turn is 4 (Pot is $200)
Hero bets $130

1st hand - You don't want a Queen or Jack in your hand because you want your opponent to have QQ/JJ. So X back. We want a hand like Ax to block AQ and also unblock QQ/JJ.

2nd hand - Don't 3bet KJo PF - we want suited hands and hands that dominate our opponents calling range.

As played- check flop. We want a in our hand if we are cbetting this board. As played - the 4 changes nothing but we would rather have a hand like AK here to block his strongest continuing range. I think it's okay as an exploit - not great in theory.