Boilies are available as bottom baits, pop-ups and wafters. Bottom baits are fine when fishing over a firm clean lakebed. A pop-up boilie will ensure your hookbait is easy for the fish to find if there is any debris or light weed. Wafters are in between a bottom bait and a popup and are just buoyant enough to counteract the weight of the hook. This results in a critically-balanced set-up that can be inhaled with minimum effort.