To bring sharks to the boat, a simple chum line is set out. 1 or 2-5 gallon buckets of ground or chopped fish remains are set out in clear blue water, miles from the coast, going the speed of the wind or a knot. Within 1/2 to 1 hour, you’ll see fins right at the boat. Watch, to see that you have manageable sharks. If you do, you’ll want to "bribe" them by a little food...tid bits. It’s best to get in the water with no bubbles (snorkels gear,) and no fear, and camera equipment or good memories. While in the water, with poles it’s a gimme to keep them there with something attract them, they’ll eat out of you’re hand. The common blues in California are rail thin, but beautiful. I used to fish them and makos until I learned about them. I realize "feeding" may be controversial as in "unnatural" predation which may be looked at as causing problems, much like "baiting" great whites with decoys. I’m on the total side of...I think it adds character to a life in the water.
I’m only working for a boat, that will bring up sharks. It takes a bit of planning. If 4 divers show interest, we’d put it together, or do something else.