Villain is loose bad. He seems to give credit to pat opponents, but will bluff catch very lightly when both players draw on 3rd. I expect him to be weak when he doesn't bet the flop. How are you proceeding on the turn?
I can see arguments for all 3 options.
Poker Stars $2/$4 Limit 2-7 Triple Draw Lowball - 5 players - View hand 1589895
DeucesCracked Poker Videos Hand History Converter
Pre Draw: (1.5 SB) Hero is BTN with K
7
5
5
2 
UTG raises, CO folds, Hero 3-bets, SB folds, BB folds, UTG calls
First Draw: (7.5 SB) (2 players)
UTG draws 2, Hero draws 2
Hand: Q
9
7
5
2 
UTG checks, Hero checks
Second Draw: (3.75 BB) (2 players)
UTG draws 1, Hero draws 2
Hand: 7
7
7
5
2 
UTG bets, Hero ...
