There's two ways you can target snapper. Bait or SP. For SP grab some 7" Jerkshads and large wrigglers and your on your way. With baits, things like squid, pillies and other fish flesh are standard. Another deadly method of snaring a few bigger reds is to livebait with slimies, yakkas and small squid. The fish are generally good quality when taken using this method. Burley is key as well! Location wise, i'm not too sure about outside broken bay. What i will say is that Lion island has a fair few reds kicking about. The NE corner and SE corner are two of my favourite spots. Burley up and you should get a fair few pannies with the odd bigger red (60cm+) kicking around two. The by-catch here is good too with jew, flatties and trevally on the cards. When trying to find good snapper ground, you need to find a mix of gravel and reef and your on your way
Good luck!