Most farmers hit rocks most seasons. With Rock Dam From $350 or with your header up to $50,000 in damage. Your choice. Right now, rocks are sitting in your field. You won't see them coming. But at 8mph, in the dark, pushing to beat the rain, they're waiting. One hidden rock. One second. Season at risk. That harsh CRACK. Your Stomach sinks…. Other combines keep rolling while yours could stop. The dealer says "3 weeks for parts." The bank asks about the repair costs. Rain threatens unharvested cro