They way you cast is not only very important for your safety but it deffinalty helps the amount of fish you catch, too - especilly the biggers species.
If you just drop the line in off a pier or jetty - you can catch goby (rocking), wrasse and possibly some mackerel.
If you cast your line off midway - you can catch bigger fish such as cod and codling, whiting and things like that.
If you cast your line really far out - you can catch bass in the classical
''third wave'' and flatties along with the possible small ray.