AT: You have to be really strong in your core. Sit ups. Focusing on your ab muscles and your back muscles, and keeping them in balance. Make sure you're doing sit ups, making sure you're doing Supermans. You use your quads a lot for sailing, and the only way to train for hiking is by actually hiking. But to be able to get a powerful tack, to be able to jump across the boat [it's really helpful to do] one-legged squats, squatting all the way down and standing up, and then switching legs. Building your balance and the strength you need to be powerful across the boat, jump into your straps, hike out, and get the boat flat again. That's one exercise, especially in my CrossFit, I've been doing more and more and I've been getting stronger and stronger at it. And I think that's a very useful tool.