You can fish from the shore because:
As of Jan. 2015, Splitrock became an official NJDF&W Wildlife Management Area:
“Wildlife Management Areas are closed from 9 p.m. until 5 a.m. unless engaged in lawful hunting, fishing or trapping activities. Special permission may be granted for division approved activities.”
http://www.state.nj.us/dep/fgw/wmaregs.htm