you would probably have to freeze your needlefish into one of those molds..
Me and some buds used to fish like that with a 3 man waterballoon cannon when i was in highschool.. we would cast normally but would chum with the waterballoon thingy..
I might not be the longest caster on the beach or Canal, but thats too much like giving up for me...no respect for the art of the sport at all there...some people are absolutely shameless....