If filleting in harbor area or anywhere in the ocean for that matter and your cutting board hangs on the side of the boat watch out for sea lions popping up and grabbing your fish right out of your hands. This happened to me twice in the same day. Never again.
Also, I take the great big plastic lawn bags and dispose of the carcass in there and tie the bag in a knot then place that bag into another one and tie that. Sometimes the bones will poke a hole in the plastic and then you have to do it again. Then, go find a dumpster or garbage can away from everybody you know and isn't illegal to throw trash into. I have a friend who owns a business that has his own dumpster that will let me throw away stuff.
It's a problem but it is doable.