Couple of marginal overpairs facing raise on flop, what to do?

[Chip Monk]

Hand 1: 0 reads, just sat down at table.

Seat 1: BenAmg ($48.35 in chips)
Seat 3: Uglene ($18.05 in chips)
Seat 5: Manzit ($68.00 in chips)
Seat 6: Titsonabull ($49.25 in chips)
Seat 8: Waldhoffan ($48.25 in chips) DEALER
Seat 10: schlumpfi ($50.25 in chips)
schlumpfi: Post SB $0.25
BenAmg: Post BB $0.50
*** HOLE CARDS ***
Dealt to Titsonabull [9d 9h]
Uglene: Fold
Manzit: Fold
Titsonabull: Raise $2.00
Waldhoffan: Fold
schlumpfi: Call $1.75
BenAmg: Call $1.50
*** FLOP *** [2d 8s 6h]
schlumpfi: Check
BenAmg: Check
Titsonabull: Bet $4.00
schlumpfi: Raise $12.00
BenAmg: Fold
Titsonabull: ??

Hand 2: Trips444 is 52/4/0.5 with flop agro of 3 and wt/w$sd stats of 25/33 having losing 73 dollars already (316bb/100) over 23 hands

Seat 1: Rizumu ($55.10 in chips)
Seat 3: fishfinder000 ($95.75 in chips)
Seat 5: Titsonabull ($49.25 in chips)
Seat 6: DrRot ($51.30 in chips)
Seat 8: Trips444 ($82.63 in chips)
Seat 10: DankoP ($60.60 in chips) DEALER
Rizumu: Post SB $0.25
fishfinder000: Post BB $0.50
*** HOLE CARDS ***
Dealt to Titsonabull [9s 9c]
Titsonabull: Raise $2.00
DrRot: Fold
Trips444: Call $2.00
DankoP: Fold
Rizumu: Fold
fishfinder000: Fold
*** FLOP *** [4h 7h 3c]
Titsonabull: Bet $4.00
Trips444: Raise $12.00
Titsonabull: ??

Hand 1 is difficult with no reads. I'm interested to see what peoples standard lines are here. Hand 2 is complicated due to villain's high vpip + 1 billion scare cards on turn if we call. Thoughts?