We saw that the waves from the wake boat and the cruiser were similar in magnitude, at 15 centimetres or so, for the significant wave height. The bass boat was about a third of that, at five centimetres.
We also measured the increase in turbidity for every wave that passed. We found there was nearly a linear increase. It was actually slightly more than linear. The exponent was 1.1. This means that even if the boat has a smaller wave, we have an understanding of how much sediment it kicks up. We could do a cumulative estimate of the impact of those smaller waves, as well as an assessment of the cumulative impact of the larger waves.
That's a bit of an empirical exercise. What we prefer to do—which is what we're going to do—is make a numerical model with the data we have, calibrate the model with that data and then apply it to different boat types. We'll be able to have a better estimate of the impact of each type of boat.