SB is a fish, I've seen him limp or raise A4o and A7o UTG. I really want to isolate him. No really constructive reads on BB.

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($24.45)
Button ($142.85)
SB ($19.60)
BB ($108.10)
Hero ($54.55)
MP ($27.15)

Preflop: Hero is UTG with A, K.
Hero raises to $2, 1 fold, CO calls $2, 1 fold, SB calls $1.75, BB raises to $8, Hero goes for the felt....