Simple moving averages are all you need to catch 'the big trend' (i.e. peak oil), but beware, in choppy, sideways markets they will whipsaw you like a rag doll.
People like to deride traders, but try it sometime. You think the products are in short supply and there is adequate crude due to reduced refining capacity, but then demand falls and all of a sudden you have ample spare capacity, record high imports and the gov't s intention to release SPR capacity at will and the market falls 20-25% in a little over a week. Laugh all you want, but those are real losses. So unless you have a small, piddly position, it hurts.
A head and shoulders looks a lot like an A, B, C correction while it is happening, but getting it right requires going home on a Friday night short crude oil while Rita is bearing down on Houston. Ya, some get it right and some don't, but both Katerina and Rita were completely different storms between Friday night and Monday morning. Mostly we shrugged Katerina off as it passed through the Texas Panhandle with very little damage only to be caught out when it turned around and picked up strength, and mainly there were a lot of doomers who were confidently predicting Rita to be much worse than katerina.
Hindsight is 20/20, but it looks a lot different when I have to decide this morning whether at $62.00 we are in a Friday afternoon correction higher or looking to test channel support at $60?
My two cents in any case.

The organized state is a wonderful invention whereby everyone can live at someone else's expense.