NL25 4bet pot with fish

$0.10/$0.25 Ante $0.05 No Limit Holdem
6 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($59.55) 238bb
UTG+1 ($38.09) 152bb
CO ($37.09) 148bb
BTN ($73.30) 293bb
HERO (SB) ($74.24) 297bb
BB ($54.10) 216bb

Pre-Flop: ($0.65, 6 players) HERO is SB 9♣ 9♦
UTG raises to $0.75, 1 fold, CO calls $0.75, 1 fold, HERO raises to $3.75, 1 fold, UTG raises to $7.75, CO folds, HERO calls $4

Flop: 6♠ 8♣ 7♦ ($16.80, 2 players)
HERO checks, UTG bets $12.25, HERO calls $12.25

Turn: 4♦ ($41.30, 2 players)
HERO checks, UTG goes all-in $39.50, HERO calls $39.50

UTG is big fish, 66/16,
Had about 20 hands. He left me about 30$ with TPMK in 3b pot vs my overpair. Sitouted and returned with stack he have now, lost 2 small pots in last 3-4 hands.

Given dynamic what do you think about my play? Plan was to fold only A turn, call others to let him bluff with random cards.