Quote from bone:
You can't "scalp" that market in the traditional sense of the term - if for example you sell the offer it becomes the bid too fast for you to flip on it; in other words you have very little chance of successfully bidding to scratch.
I trade that market every day, but I'm spreading RBOB several different ways with other products and using automation to some extent.
Due to the volatility in that market space, I don't recommend scalping anything flat price in energy. And yes, I scalped fixed income in the CBOT pits and on the screen for a few years before I learned how to spread trade.