Ive been low on the IM and decided to enjoy my summer this year lol. So I'm looking for a quick part time job to pay for the booze and invested in a harpoon. I am planning on going spearfishing quite often at an attempt to catch a good amount of sellable fish. I heard of people in my country making an easy 300 - 400 euros in a day of spear fishing, so why not I own a boat might as well try it out. Anyone here goes spearfishing if so got any advice for a beginner ?