Ocean swell height doesn't matter much, the period does. A 10ft swell on a 30 second period is nothing, a 10ft swell on a 5 second period you're going to have

Ocean swell height doesn't matter much, the period does. A 10ft swell on a 30 second period is nothing, a 10ft swell on a 5 second period you're going to have a bad day.