you are in the BB - SB opencompl. checks flop. autobet?

[ninenine_zoe]

since we are table/seat selecting well, we have the loose passives/maniacs/donks to our right. in some rare occassions its folded to the SB and you are sitting in the BB. SB opencompletes.
i think i raise a lot of BB starting hands there and i am fine with this.
sometimes my hand is really not strong enough to raise. so i check behind (unless this donk has folded to a raise after an opencomplete before).
some flop appears and its checked to you. do you autobet every flop?
as example:

Paradise Poker 1/2 Hold'em (3 handed) Hand History Converter Tool

Preflop: Hero is BB with 8[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (2 SB) K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets?</font>

if he raises me here, its an easy fold.
what adjustments do you make after that?