you might want to start with a low end model the way most paddlers start. One like the Garmin Etrex.
It will give you all of what you need and is much simpler and cheaper than a higher end model.
I started with the Etrex, and then went on to a Map-76, and then from there to a Map76Cx.
read the manual and learn it, and then go from there.
Full Size Sail Rig
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