Unless we’re in very strong conditions, it’s difficult to jump to the next set of waves, so no longer do we sail straight courses. Modern boats sail downwind through as much as 80 degrees. They’re apparent-wind machines, and we can use the three pumping modes to sail quite different courses. When we catch a wave, we can go really low, using impulse pumps and reverse pumps to keep it going. Then, at the bottom of turn, crew weight moves to leeward, even on keelboats, to help the boat turn back up. We reload the upturn as the apparent wind moves aft, and put more force in the sails, then, with a big rowing pump, off we go again.