Dear Karl,

Interesting question, unfortunately, I could not locate any literature specifically on the impact of kite surfing or electric foils on sea turtles. However, there is some research that suggests that watercrafts, like boats and jet skis, can disturb and even injure sea turtles, and this could be applicable to kite surfing and electric foils as well. This link may be of interest: https://www.google.com/search?q=Maffucci+et+al.%2C+2007-+turtle&client=firefox-b-d&sxsrf=ALiCzsbyQu-_X_DSaAG5P7VshNhP1E7LUQ%3A1672262737201&ei=UbSsY-XgC6nd7_UPkaKh0Ao&ved=0ahUKEwilza-ToJ38AhWp7rsIHRFRCKoQ4dUDCA4&uact=5&oq=Maffucci+et+al.%2C+2007-+turtle&gs_lcp=Cgxnd3Mtd2l6LXNlcnAQAzIFCCEQoAEyBQghEKABOgoIABBHENYEELADOgcIIRCgARAKSgQIQRgASgQIRhgAUOMTWN8rYJs6aAFwAXgAgAH-AogBrBOSAQUyLTQuNJgBAKABAcgBCMABAQ&sclient=gws-wiz-serp

I hope this information is helpful.