Top set. Draw heavy board heads up. Play fast or trap?

[Alexey]

Cryptologic - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $35.33
Hero (BB): $63.44
UTG: $71.67
MP: $7.75
CO: $59.88
BTN: $22.77

Preflop: Hero is dealt 7[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (6 Players)
4 folds, <font color="red">SB raises to $2.00</font>, Hero calls $1.50

Flop: ($4) 5[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $3.50</font>

Most likely villain is sitting with overcards, so a check could allowed him to catch, but board is very drawy, so I have to protect.
Your opinions, please, slowplay or bet strong?