I cannot believe for a second that you Matthew need to do a certification to learn how to use this tool. I will teach you for free. Likely do a better job too, maybe show you some upsidedown maneuvers that are pretty cool. This is used in the swim throughs. Also I'll teach you how to hit them will drifting along, teach you about the way water refracts images. hmm you likely already know that. I am being factious about that last line as I am upset you are playing into their hand.
Kevin, I appreciate your confidence in my abilities to use this tool untrained. I hope however, that there will be more training involved than just stabbing practice. To be honest, I have never killed a lionfish, and have no desire to do so. I signed up for the course because I feel that it is my responsibility as someone working inside the park to open myself up to the argument. Maybe I will learn something at the course that will convince me that we are not just being short sighted, arrogant humans by believing that our efforts to kill these fish are doing more good than harm. And for believing that our puny efforts are going to make any impact what so ever in the evolutionary history of one tiny island surrounded by lionfish. For me this is about more than just how to kill, it's at least as much about should we kill.
Leave well alone, the park is loved by the people that work it. Not everyone is allowed to use the killing tools.
So currently who is not allowed to use them? Other than the park rules, which many seem to ignore (yourself as much as anyone if previous posts are to be used as an indication), what criteria can we use to say who is allowed and who is not? Is it to be decided by the diveshop, the DM, the individual diver? Just who gets to say who is allowed and who isn't, if not the Marine Park?