Spearfishing from Bahia Honda in the Keys???

I've stayed at Bahia Honda several times before and have seen others there in the campground with spearfishing equipment who go out in their boats and spearfish. I would like to try this myself when I go there this summer with my boat, but I recently read that possession of spearfishing equipment is prohibited in the park. I know you have to be I think at least 400' from the park's shoreline, but how are others doing this if they are camping at the park? Are they stowing their equipment in their boat until they get out to the spot they are going to spearfish? I don't want to get into trouble with FWC or park staff just from having the equipment in my boat while I'm at the campground. Are other campers there just ignoring the possession rule? Is it a rule that's not really enforced? Thanks for any insight on this.