Bucktails catch virtually anything that swims, so it's always a good bet. For kob, you should get some clone lures, they're very effective. Rapala X-raps also work well...make sure your retrieve is very slow, you should be hitting the bottom often.
Garrick will eat most lures retrieved fast - gt ice-creams are a good choice for topwater, as are thai sticks for the smaller fish, I've caught loads on small Halco outcast lures and I've had a few on Onda's.