The Rapala Countdown 5cm can be trolled, cast and slowly retrieved, or cast and allowed to sink to the required depth that the fish maybe holding.
So whether the fish are suspending at certain depths near the weed tops or on bottom structure, the Countdown can get you to them consistently. They have a working depth of between 0.6 and 1.2 metres. There are a number of different techniques that you can try when using this balsa sinking lure.
Cast the lure and allow it to sink to the bottom. While it's sinking you should count how long it takes. Next time count 1 less, start the retrieve and the lure will stay just off the bottom. Or you can work out where the fish are holding and count down until you are in amongst the school, and start a stop-start retrieve to entice the fish to bite the lure.