so i'm incorporating some 4bets where I'm not willing to get it in.
here's two spots.
first villain is playing 34/25/3.8 with 3bet of 14.9 (which is huge)

so I assumed he would definitely respect a 4bet since I'm UTG. Now my only other concern is that often tagg's like me will just call 3bets here in position with big hands, so does that make it a little more likely that I'm 4betting with air here, or is it still a decent spot to do it? If I flat his 3bet, then how do I rep a huge hand on the flop?
$1/$2 No Limit Holdem
4 players
Converted at weaktight.com

Stacks:
CO Hero ($224.20)
BTN greenlime22 ($403.35)
SB YouplaBoum777 ($209.40)
BB aimezhu ($426.35)

Pre-flop: ($3, 4 players) Hero is CO
Hero raises to $6, 2 folds, aimezhu raises to $22, Hero raises to $56, aimezhu raises to $426.35

Final Pot: $483.35

on the 2nd hand villain is 24/14/2.0 with 3bet of 4.0

now he's not 3betting all that much, but it's a similar amount to what I'd be 3betting with, and my 3bet range in his spot is quite wide knowing that a tagg raises a very wide button range. If i call the 3bet, I figure I have to go with either an A or Q flop, what's your thought?

$1/$2 No Limit Holdem
4 players
Converted at weaktight.com

Stacks:
CO coachk21 ($313.40)
BTN Hero ($200.00)
SB KayBash ($293.75)
BB x6tence ($311.05)

Pre-flop: ($3, 4 players) Hero is BTN
1 fold, Hero raises to $6, KayBash raises to $24, 1 fold, Hero raises to $55, KayBash raises to $293.75

Final Pot: $350.75