My two cents
I know the airfeild you are talking about and I have always had an uneasy feeling doing a cicuit with student there for that reason. Unfortunatly there is not alot you can do to avoid that situation.
I can see why you didnt head for deep water as the shorter the swim the better. At the end of the day both you and the student were fine the machine was going to get wet either way so you must have made the right call
