"When the second half started we picked it up again and showed we we're good enough to win and we got the goal we deserved."
Shulman, who runs the team with Viv Emanuel, was delighted with the new-found resilience shown by his players.
He said: "Norstar threw everything at us, even the kitchen sink, but our defence held up and showed that we aren't the pushovers that people think we are.
"I am immensely proud to get my first win and am even happier it was against Norstar as they are a good team."
Liam Stein scored for the second consecutive week for Raiders, turned sharply in the penalty area and firing home, but it was Boca who was smiling at the final whistle.
Norstar boss Zack Gothelf told JC Sport: "The awful conditions did us no favours against a much-improved Boca.
"We struggled to perform close to the impressive standards of the previous week, but hopefully this is just a blip for Norstar who will be more determined that ever to get three points next Sunday."