Donk flop small UNLESS Villains between you and the BTN PFR are quite likely to donkbet in the the BTN PFR. In that case, you should check to the BTN PFR with the bonus that someone in the middle is likely to donk into BTN PFR if that someone has a piece of the flop.

As played with your tight lady image, I would lead turn small $55-$70.

I played almost this same scenario the other day. 22 UTG, knew I’d face a raise, but there were four players with 300+ BB effective (including me) so I went for it. My flop was K72 rainbow.

I check/called flop, went for c/r on turn but V checked behind. I made 1/2 PSB on river and he meh…/called. Probably a weak K.

Hands like this remind me how tough it is to play out of position. Marginal hands are tough to play, monsters are tough to extract value… Bad all around.

As for checking vs leading turns. I figure if he’s got a hand worth stacking off (overpairs/TPTK/two pair/etc) he’ll fire away, I’ll raise, and all is good. If he’s got a weak hand that he’ll check behind, most often they wouldn’t call a realistic turn bet anyway. On really dry boards you’re not really giving up value here. In fact, you’re happy to give a free card and hope they spike trips/two pair and will now stack off when they wouldn’t have otherwise.

Grunch:

Donk the flop 100% of the time imo.
We'd love to get some dead money trapped into the center here before the pre flop raiser goes crazy and raises. Or just get a train of caller behind us.
Something small to induce someone to be stupid so like 1/3 the pot.
There aren't a whole lot of turn cards that we don't like, so we aren't worried about too many people coming along for our smaller sizing.

If the pre flop raiser was in EP compared to the rest of the field, I'd be much more likely to ck/flat or ck/rs depending on sizing and callers.

I'm folding a preflop pocket pair at $1/$2 with 300BB effective stacks to a single raise precisely the fifth of never. I don't care that "not all sets are created equal". One of the biggest ways to stack players at $1/$2 is set over high pocket pair or set over TPTK.

Especially in games where 4-5 players are calling the raise with me.