Most people I know use it fished on (near) the bottom, above a sliding sinker. It's fairly effective on stocked rainbows, but no more so than an inflated head of a nightcrawler, fished the same way, or a salmon egg suspended off bottom or right on the botom, for that matter. I consider the stuff highly overrated, to be honest...You'll notice that it only really "floats" well, after it's fallen off the hook too! You'd need to use a very light hook and leader to get it to float otherwise. -Jim