I do wear a waterproof jacket over my wetsuit and tuck my camera under it when there's sea spray. I also carry my extra equipment in a dry bag that sits in the hull of the jet ski. I've never used any sort of housing for photographing from a jet ski or boat, but unfortunately, that resulted in the loss of 2 cameras on the same day right after photographing this shot. I was too slow to tuck the cameras under the jacket and IMHO we were dangerously close. I won't get that close again. I'm not comfortable with the idea of being held down for multiple minutes.