do I checkraise this paired deuce?

[Guruman]

I'm at a crazy loose table with lost of loose/weak players.

after three limpers I call with A2s in the sb.

the flop comes twotoned with a deuce on it.

checked around.

turn does not complete the flush.

assume the following:
villains will fold without a pair or draw almost every time.
villains will call with a pair or draw almost every time.
someone will probably bet with air if it checks to him.

bet out? (and probably pick the pot up now)
checkraise? (and trap whomever for two on the turn)
check/fold?