Check out our crazy North trek off the start! We were headed for the Big Island. The correction comes after my boat found me and said - where the heck are you going?!! After they gave me a direction I was able to pick a point on Oahu/clouds above Oahu and stayed pretty straight.
This was my first year to use a GPS on my board across the channel. I have the GARMIN Forerunner, 310XT. It is wonderful for training - you can see your speed, distance, time and split simultaneously. You can also set intervals for speed work, and it has a great default setting that tracks every mile.
|Mile by mile, elapsed time, avg. pace, avg. speed, max speed. Note that I started the watch early & stopped after finishing so the overall time is over 9 minutes slow.|
Although the larger, console style GARMINs have a map, mine is a small watch style that does not have a map (that's what your escort board is for!). But, my GPS does give great post-race analysis data.