Amphibious:
personally i find it totally unethical.
I just feel that freedive spearfishing is a far greater challenge and more rewarding to the hunter.
Amphibious, you just had to go there didn't you?
Freediving or scuba diving can both be very challenging and rewarding. Running 75 to 100 miles offshore, and diving 150 to 250 feet on scuba, to shoot 50 to 100 lbs spooky groupers or snappers with freeshafts, is no less sporting than freediving to 1/3 the depth for the same species of 1/5 to 1/4 the size. That's the way it is in most of the US.
There are countries that would say your method of spearfishing with a high powered line gun is unethical to them, ie. the Bahamas, where you can't legally use any triggered device. It's their country so their rules apply, and I'm inclined to respect them.
In a country where the sport is both legal and practiced conscientiously by the majority, there is no call to preach that scuba spearing is "totally unethical."
Any freediver worth a damn knows that there are many times and places where he has the advantage over a scuba diver. A freediver could and many do spearfish without good conscience, just as some scuba divers can make bad examples.
If you must condescend to someone, spend your time finding offenders of good sportsmanship and rag on them... but bubbles will not be the indicator!
We both have a lot in common, besides a desire for hunting while freediving, we're both instructors and tech divers too. I'll bet we'd get along fine, like I have come to know many other freedivers. Not asking you to change your method, practice whatever technique you prefer, just lighten up on scuba spearos.
Chad
TDI/SDI IT 250