Previous hand about 5 mins ago....

Seemingly tightish guy (very few hands for a read) raises $7. I call in the BB with 33.

Pot $15. Flop T74. I check..he checks behind
Pot $15. Turn 7. I check..He bets $7.50. I check raise to $23 because I dont believe he has anything. Most raisers who dont CB will try to CB the turn if it gets checked to them again because I must have nothing if I checked twice. He folded.

On to the hand....Cutoff raises $7. I call OTB with [Kh]. Villain calls in the BB.
Pot $22. Flop [Kc][4c] Checked to me. I didnt see the FD and check behind.
Pot $22. Turn . Villain leads 1/2 pot ($11.50.) Cutoff folds. I raise to $30. He calls.

I guess its not the same line sine last one was a check raise but he bet 1/2 pot on the turn and I raised about the same amount proportionally to the pot.

Pot $83. River . He checks. He pretty much has to have a pocket pair. How much do you bet based on the fact that he probably thinks Im FOS. Im putting him on TT.

depends on how much you both have..

in the vacuum I'd either bet $72 or shove

If you put him on TT I don't see how you can do anything but shove. Zeebo theorem FTW!

What was your thought process for checking the rainbow flop?