[hagbard celine]

Understand that your weak 4bet preflop made your post-flop decisions tough.

Once CO minraises you preflop, the pot is t475, and it's t100 more for you to call. You want to start planning to get all the chips in. Not make another baby raise to t550 and Villain only has to call t300 more.

Shoving is an option, but a bit of an overbet. However, at this level, Villain might be so bad that shoving won't fold out middle pairs and weakish aces. Notice that by shoving you don't find yourself folding what is quite possibly the best hand on the turn when Villain bets 1/6 of the pot.

You can also put in a healthy raise preflop. After calling Villain's minraise, the pot is t575, and you want to raise about the size of the pot, something around an additional 500-575, let's say t500. This makes the pot t1075. Now Villain can either shove, in which case you call with a fistpump, or he can call, which makes the pot t1575. Now notice that given the size of the pot to your and Villain's stack, you are both committed to the hand, and it will pretty much play itself, regardless of the flop.