Reminds me of my Granddad's farm near Mt. Vernon- we could buy DuPont graded dynamite at the local hardware, kept downstairs in big wooden boxes and the red sticks were packed in sawdust and the cover kept on the box-- We'd use waterproofed fuse and strap a stick to a cinder block, light it and drop it from the boat into the farm pond- and "haul bass" away- we had a 14 foot wooden lapped design fishing boat with a Mercury 5 hp. outboard- we'd get away from the center of the pond- a "depth charge" like in the WW2 movies about submarines- and then the stunned catfish would start emerging- nowadays, the PETA and SPCA would be all over that like ugly on a ape!