Remember, pitch and roll will ensure that the boat — and your eyes — will be at an angle more often than not, so you may not get a true measure. It’s best to rely on technology. The National Oceanic and Atmospheric Administration measures sea conditions via a series of buoys and tide stations. Lucky for us, there’s an app called NOAA Buoy and Tide Data ($1.99, iTunes) that you can use to read weather data from the nearest buoy. The most detailed buoy readings will provide info, such as wind speed and direction, significant wave height, dominant wave period and the atmospheric pressure trend (whether it’s rising or falling). The caveat is the closest buoy might be 20 to 30 miles away, or it might provide only basic data, such as water and air temperature. Another app, called Buoyweather, provides real-time sea-state information ($4.99, iTunes). The Buoyweather website and free app also provide free marine forecasts. A free app called FishWeather provides hourly wind and wave height information for specific locations.