The 'Waterbird' course is a fantastic course run by the Canadians based out of Halifax (or was?).
Great eye opener as to what the aircraft can do but the Cab is specially sealed and prepared. Must admit I wouldn't like to have done the same thing in either a normal cab or with a swell running!!!
The normal nose bay only has a compression seal which is not man enough for the job of keeping the water out fully in normal circumstances.
It is a truely bizzare feeling to run the aircraft forwards on one donk, pitch to 'surf' the bow wave then 'overpitch' to get airborne. Then fight the NR/height/speed etc....
Great fun