What is your reasoning behind the thinking that hooking jacks by the dozen is OK, but spearing 3-4 for dinner is wrong? And what about Hogfish?
I would also point out that while as a "spoiled gringo" who has grown used to an Americanized diet I may only choose to eat the fillets, my island friends will eat almost the entire fish and their dogs will eat whatever they don't, so that there is no waste whatsoever.
How is this worse than line and hook fishing?