Hi KC,
I think the more accurate statement is that the funds follow price. Take a look at either your Wheat or Jack-7's Corn chart. You can see when the funds made bets that didn't pan out ... they lose too. The best funds in the business only produce, on average, 25-30 percent returns. They are notorious trend followers not trend setters or makers.
I would also suggest some serious thinking about the fundamental stimulus for a reversal of the trend. The funds and others in the business are more about guessing based on studies of what's most likely ... there's that phrase again ... to happen. They are notorious for being early and are almost never late. The difficulty in trying to piggy back their intelligence is that you will get in after them and by the time you do get in they may have already made the decision they were wrong or too early and be bailing as you enter. They are mercurial in their movement of positions. They are also notorious for knowing small specs try to piggy back them ... they will run until the small specs catch up with them and then bail, buying again when all the weak hands have been beaten into submission on their stops.
Which would support the belief of every pure technical trader ... it's all already in the price. One needs no more than the chart to see everything taking place.