Market making for low volume stocks?

Has anyone tried market-making in the pre/post market hours when bid/ask spreads are high? For some assets e.g. gold ETFs there isn't a lot of price risk (and it's probably hedgeable with another more liquid ETF). Basically sit around and wait in premarket hours when spreads suddenly start to get big (which means orders are coming in), buy at higher than the bid OR short at less than the ask, close positions in the daytime. I'm looking at the volumes on some of these things and they are indeed low, but hey, $1000/day is meaningful to me but it isn't to a Wall Street firm.