SNAPPERS & BLUE CLAW CRABS
It's primetime for Snappers and Blue Claws. Anchor up anywhere there are flats next to a deep water channel. For the crabs you don't even need to go out and buy traps if you don't have any. Just cut some wire hangers, and make small loops. On each loop you can string a sinker along with a whole squid (or any other bait, chicken meat, etc..). Then just tie some mono on to each loop and place them all around your boat tied to the cleats, bow rails, etc..
Let the kids slowly pull the loops to the boat while another stands by with the net. After a few tries they will learn to feel a crab when there is one on the line. The trick is to pull very slowly and to net the crab from below.
For the snappers let us know if you need some pointers. But from a boat with a moving tide it's so much easier for kids to fish for them because they don't have to cast (have them let the tied or wind take their bobbers out). Spearing is all they'll need.
Trust me, this kind of trip will be the most fun for them and give you the least amount of headaches!