It's like anything water related Allan, so long as folk are competent in the use of their craft, have had some training and know what to do in the event of an emergency then the job is generally a good 'un - no worries.
The problems arise from folk who do none of the above, don't take in the bigger picture and fail to understand the ramifications for themselves and their rescuers based on the uninformed decisions they make
Fortunately, to date, there have been very few incidents that we have been aware of
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