so how deep can you shoot with a rig like that.
its awesome that you got the kids out there.
i can't speak for him, but with the setup i've used(a 50# browning compound), once they get 2 feet or more under the surface it starts getting really hard to hit them, even those heavy fiberglass arrows lose velocity very quickly.
we shot them from my boat -- 1 guy runs the trolling motor to sneak up on them, the other shoots. noon seems to be the best time, no shadows to spook them. we would try to nail the ones that were sunning with their backs out of the water.