about hooking it up... there should be rca outputs on the camera, and inputs on the vcr. just set the camera to run through the outputs and then set the vcr on the input and record.

about the water shaking, you might not be able to get that on video too much. you might try setting the camera right next to the wall (actually leaning against it maybe) and then if he pounds hard enough, the camera itself would shake too. :dunno: