the guy is 67.5/0.8/0.7 around 130 hands, loose stations and capable of bluffing with air on scary cards. i saw him bluff big a few times on scary board.

hand 1: he donked out on the turn, should i just flat call or raise to deny his imply odds? if raising, how much to go?

PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($103.85)
Button ($63.45)
SB ($12.05)
BB ($102.90)
UTG ($110.50)
UTG+1 ($100)
MP1 ($89.50)
MP2 ($182.40)

Preflop: Hero is CO with A, J.
2 folds, MP1 calls $1, 1 fold, Hero raises to $5, 3 folds, MP1 calls $4.

Flop: ($11.50) Q, 8, J (2 players)
MP1 checks, Hero bets $7, MP1 calls $7.

Turn: ($25.50) A (2 players)
MP1 bets $11, Hero ?

hand 2: Should i slowdown on this scary board from the turn on or still go b/f mode vs this donk?

PokerStars No-Limit Hold'em, $1.00 BB (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

Hero ($124.85)
UTG ($36.65)
UTG+1 ($98)
MP1 ($100)
MP2 ($93)
MP3 ($100)
CO ($100)
Button ($234.35)
SB ($224.10)

Preflop: Hero is BB with , .
6 folds, Button calls $1, SB completes, Hero raises to $6, Button calls $5, SB folds.

Flop: ($13) , , (2 players)
Hero bets $8, Button calls $8.

Turn: ($29) (2 players)
Hero ?