20/40 I float in the CO

[climber]

20/40 full 40% to flop...small site so no player stats...
fairly passive with the exception the guy just to my right who is tilting against me specifically cause i was owning him with 98o and stuff like that 3 handed earlier in the day. This is mostly postflop with bluff c/rs and stuff like that. At this point in the session his preflop game is still that of a normal decent player with the exception of being way too loose from the blinds.

Preflop:
Lousy player UTG limps in, folded to tilter in HJ who raises, I float with ATs, Button(tightish) folds, SB folds, BB calls, UTG calls.

Flop: Qd 5h 6d
checked to HJ who bets(as always), I raise, fold, fold, he calls

Turn: Qc
HJ donks, I call

River: Ad
HJ checks, I bet, he calls.

First, I'm more of a 3-bet or fold guy but the flaot seemed correct here. I dont float much but was curious if this is a correct spot for it?