65s BB vs. pf raiser

[Redeye]

No reads, new to table.

Here is a type of hand I really struggle with. A Small multi-way pot with 2nd or 3rd pair on a raggy flop. What would be a standard line here? Donk the flop? C/R? Call flop donk turn? Call down, maybe fold if an ace hits?

Maybe this is way too opponent dependent, but a lot of times I feel lost here. I feel like if I donk, I get raised by worse hannds way to often making the turn difficult to play.

PokerStars 3/6 Hold'em (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 6[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">CO raises</font>, <font color="#666666">1 fold</font>, SB calls, Hero calls.

Flop: (6 SB) 5[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero?