It has just never suited my eye, and I didn't like the P&L swings when I did trade it. I even bought Platt's data for barge offloadings and did pricing calculations including FX for basis calculations (cash fair value).
I have clients that use my model on it and trade it and they make money on it, but I don't even have it loaded on my scanner or charts.
Having said that, I will admit to trading the Brent Front Calendar versus the WTI Front Calendar from time to time. That's more my style, anyway. Most of my clients love the RBOB and HO cracks with my model, but I'd rather go 3:2:1 or Gas/Oil Crack legged 5:4.
That's just me. I'd rather lever the living hell out of a nice, smooth, well behaving spread because I'm older now and I like to put on longer timeframe positions and let them work. You can make $15K in a day with 500 butterfly spreads on, or you can make $15K in a day with 25 Crack Spreads on. The bottom line, after all, is the bottom line. I spend time with clients, the golf course, and one of the boats. I've got three kids in junior high, HS, and college. It's just perspective. Some of my clients are very, very good traders. I reckon that three of them have made more money in their 20's than I've made in my lifetime.
We have alot of spread combinations to look at, and with the model and the scanner doing all the work on the entry side analytics I try to get into a 'cherry-picking' mentality in terms of trade set-ups. Each one of my clients tends to eventually gravitate towards a risk profile and frequently a market space that really seems to mesh with them.