Police searched the James residence swimming pool at midnight on 23 May 1998, dragging a pool stick along the bottom, and reported finding nothing. The next morning, Akiel's body was found submerged in the same pool. Two child witnesses later testified that the water had been 'very clear' and that a submerged body would have been 'impossible to miss.' What is the most logical explanation for why the midnight search failed to find the body?