No, just used the first one that popped up on Google Play when I searched for GPS speedometer. It was DigiHUD.
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When I'm going at any speed with no ballast everything is perfect.
When I surf Regular everything is perfect.
When we surf Goofy is when our speed is off, but its not even consistently off its just off. Monday Claudia surfed and I had to speed the boat up and slow it down 3 different times by 1 mph to keep her wave clean and make sure we didnt out run her.
Been a frustrating problem me and the dealer are working through, along with the phantom wake plate down issue.