I go along with shoes. I had someone ask why I was concerned about shoes in the boat. My response was would you care if I wear dirty shoes in your house? Next summer I am going to use air's answer.
How about someone getting on your boat & then telling you not to go over 30. After that trip I tell people that the boat could do 90+ at any time & if they had a problem with that DON'T GET IN THE BOAT