used in connection with the present invention including but not limited to polyurethane foam are manufactured by companies such as dow chemical company and stepan company the core material 40 may be disposed inside the hollow shaft 30 in one of several ways well known to those of ordinary skill in the art in a first exemplary embodiment the core material 40 is cut or otherwise formed into a shape with dimensions matching the inside of the hollow shaft 30 constituting the handle of the net the core material 40 may then be inserted within the hollow shaft 30 and fixed using waterproof glue or any other well known methods of affixing a core material 40 inside a hollow shaft 30 in a second exemplary embodiment and depending on the type of core material 40 used in connection with the present invention one end of the hollow shaft 30 is first sealed with a sealant preferably the sealed end of the hollow shaft 30 will be the end in which the hoop shaped tubular member 20 has been inserted or otherwise affixed the core material may then be disposed inside the hollow shaft in any manner befitting the specific core material used for example if the core material is closed cell foam a foam forming liquid may be injected into the.