TurtleHunter said..
Gueredagirl I wouldn't be too concerned about being a hazard to them while on the water, they have far bigger things with more teeth to worry about.
Plastic bags (look like jellyfish), fishing hooks, balloons, boat props, sharks, and Chinese

are the biggest threat. (My wife is a vet nurse and gets them in all the time.) The threat of boards hitting them is way down the line.
Kited a couple of places where there are turtle around but water is so clear you can spot them very easily.