Treadwell is absolutly right! It's about feel, anticipation and having someone you trust. CapeCod was a good example. Huge water. A completely fogged up helmet. Could not see the water for the entire race. I ran the throttles completely by feel. We lost out intercom, so trust in David's hand signals to make sure we didn't stuff was crucial. It takes time to learn and the belief that both the driver and throttleman have an equal amount to offer each other.