This is an experiment anyone can do. If you do try it, video tape it if you can. Document your locations. Verify distances with multiple sources. And the biggest thing to take into account, conditions. Do not go when the wind is 50 mph, or a high humidity day. Try it multiple times with different conditions to see how it affects visibility. Nice calm cool days are optimal as the lake surface is flat as a mirror, and will not cause perspective related illusions. The calmer the better. Water is static when still.