Betting with the nuts

I had this hand earlier today and was looking over the betting and was wondering how it might have played if the other guy hadn't flopped a small monster himself. Is the 2/3Pot turn bet too obvious of a trap? He called the reraise so fast I don't think he could see past the fact he flopped trips on a 72o and that I might have slow played him. Thoughts? Would the 2/3Pot bet be too obvious in such a small pot?

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) FTR converter on zerodivide.cx

SB ($9.35)
Hero ($6.70)
UTG ($5.30)
UTG+1 ($7)
MP1 ($7.90)
MP2 ($3.70)
CO ($7.65)
Button ($4.20)

Preflop: Hero is BB with A:heart:, A:spade:.
UTG calls $0.10, 5 folds, SB completes, Hero checks.

Flop: ($0.30) 7:spade:, A:diamond:, 7:club: (3 players)
SB checks, Hero checks, UTG checks.

Turn: ($0.30) 5:heart: (3 players)
SB checks, Hero bets $0.2, UTG folds, SB raises to $2.3, Hero raises to $6.6, SB calls $4.30.

River: ($13.50) 2:spade: (2 players)

Final Pot: $13.50

Results in white below:
SB has 7h 2d (full house, sevens full of twos).
Hero has Ah As (full house, aces full of sevens).
Outcome: Hero wins $13.50.

When these hands occur you are always going to get paid off.
The key in this hand AT THIS LEVEL is you checked the rockets on the bb.
Therefore when this guy flops the 7s he has to think hes ahead (hence he checks the flop) These players probably rarely if ever (again) think about what you might have when you reraise his huge reraise with your stack. He simply cant see past what he holds (which is the worst set at that moment)
For me, i call his huge reraise and then push the river. You have second nuts here (if he turns over quads i'd cry) so you want him to think hes still ahead imo. Therefore just call and then push. As it turned out he hit a huge hand but this is a case of your opp not considering higher level thinking
What does my opp have?
What does my opp think i have?
At this level you are right to assume the opp cant see past his own hand.

pair of sevens in the hole is the nuts