Ace Rag in the SB

[USCSigma1097]

A quick question about playing the the SB shorthanded.

How do ya'll play ace rag in the sb? For the purposes of this question, let's call a rag any card seven or below. Will you call with two or three limpers? Will defend against a CO or button raise? Do your standards change if you have ace rag suited? I feel that this is a leak in my game that needs to be fixed.

Thanks,
Sigma