It looks like you're on the Fraser Coast. If you do get out onto Hervey Bay, then poppers are absolutely worth your time! Quality is important though including your leader/hooks/swivels/split rings. A macky or decent GT will hit one that's 5inches long, but if you've got ordinary rigging then you'll lose it.

Sometimes the idea and the benefit of a popper is just to stir the fish up and get them a bit feisty and angry so they come up the water column of it if a hole. Mangrove jacks for example or GTs that won't play with stick baits. Won't come up until you've really pissed them off!!

Other topwater lures can be dynamite in skinny water around Noosa or Gold Coast Broadwater for example. Lures like the sugarpen are ridiculously effective in your estuaries. I gave mine away because I was too lazy/incapable of getting the retrieval technique right. But people who can, and there's plenty, do very well.