[quote=ericrayl]1. Get a Nextbook Ares tablet off e-bay, you'll spend $50-$80 depending on whether it's new or used. It's sufficiently waterproof for this.
2. Get this app. for free: https://play.google.com/store/apps/details?id=com.paloaltophoto.knotmeter&hl=en_US
3. Make a mount for your front beam.
The tablet I use isn't this make and model, what I have isn't readily available anymore. My mount is a flat plate with a short 90 degree bent leg at the bottom. My boat is a Nacra with a track in the beam, which I dropped nuts into. I used sticky back velcro on the mount plate and the tablet.
I also have a Garmin Vivoactive which is nice for recording tracks and other statistics.[/quote]
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