Techniques
Deadbait
I let the bait out 25-50m and stop and let it dive if I see bait schools or fish.
Live bait
I rarely use it but it's been very effective when I've tried.
Divers
Can be useful early in the season for bonito. Or for school mackerel late in the season. I also use them when I know there's bluefin tuna (longtails) around.
Slugs
I try to throw past the bust up and let it sink for a bit. I rarely fish for spotties with them but it seems efficient.