You mentioned earlier on, 'squrily' motion. That is not what you get on a performance boat. You get acceleration, but the steerage is very light and easy. At least into the low double digits. The AP probably runs 2 to 5 amps at 30% dutycycle. We sailed up from Portobello to Colon doing 9-10kts in a good tradewind breeze and swell. The boat was easy and fun to drive by hand or AP. But it was the conditions that I could not trust the windvane, downwind with boat speed moving between 6.5 and 10.5kts with swells to kick things around.