Axman, I can see that happening under certain circumstances, but you have to understand that most of these fields that this happens to... farmers are losing a good portion of money to feed their families with. Every time it is done with boards and ropes, crops are ruined!
Make me wonder if the farmer is in on the scheme. He may allow them to do the design then just say, "I walked into the field and there it was!"
Besides, you might say that they are getting paid to have their crops trespassed upon, but with all those crop circles appearing in mass numbers all over the world, doesn't that bring up a whole different kind of conspiracy? Just think of all that money? Who is doing all of this? Why are they doing this?