Hi, The harbor police aka water wing that ride around on the rubber duck with the blue light are very strict and tend to harass guys fishing. They want to check everything and sometimes they are fine or they are in a bad mood and want to see everything.
Firstly make sure you have your skippers ticket, valid seaworthy certificate.VHF radio license, All safety gear, flares, life jackets etc. The bay craft license, fishing license, cracker shrimp license which can be bought from a post office, i think its under general bait.
Unfortunately you will have to belong to a club as the safety officer from the club will issue you with the relevant documents once your boat has been inspected by them and deemed "roadworthy" for the bay. Its a story but worth it as the fines are heavy for non-compliance.