8 to 10 feet in deep water is a whole lot different than 8 to 10 in low water. In low wind, there are no waves breaking at the surface, there is no random chop, so the motion is FAR more like a rocking chair than a mechanical bull. If it helps with the angle to the swell, it's perfectly doable to head to Anegada from Marina Cay or Scrub. I've done that sail to Anegada from Marina Cay in 8-10 foot swell, on a 50' monohull, and no one in the cockpit even had to grab their beverage.