The kit that we carry is much the same as everyone else. I have a 1.5kg anchor on 25 metres of line and 10 metre extension carried just in case. I dont use any chain with the anchor but others here do. I like to have a fishfinder because im nosey and like to know depths and whats down there, although it doesnt find fish!! I use a handheld gps so that i can log the position of anything interesting that shows up on the fishfinder and i have safe exit points for this area logged in case of fog. A rudder has proved itself on many occasions and has saved me a lot of effort in certain conditions. We all have a light pole and or flourescent flag due to the jetski traffic that we get around here. We use the lights when night fishing. I also have a fixed illuminated compass and a VHF radio.
Dont forget a decent trolley for the yak, it will get loads of use. The electronics i have mentioned are not by any means essential, but they are nice to have and can be added later.
My favourite Bass mark is only about 500 metres offshore, but 1000 metres is not unusual and further towards southend you can be 2 to 3 km offshore. Its not just the distance outwards though. You may have to paddle some distance along before you head out.
Those jetties do produce good fish but i have had mixed results in that area. We have tried the large Chainrock jetty at Holehaven , but fishing amongst the piers has its own set of problems that can make it difficult or downright dangerous.
Dan