What Exactly Is A Pop-Up? It’s a buoyant bait that’s held down by a weight, be it a shot or rig putty. Most of the time, anglers pop up a bait only a matter of inches off the bottom, but any bait fished sub-surface is effectively a pop-up, so a zig rig is effectively a bait popped up well off the bottom. The main bait you will see termed pop-up is the floating boilie. Sinking boilies can be made to float by punching out the middle and adding rig foam. Indeed, rig foam in various colours is key to getting naturally sinking baits to pop up, as you will see throughout this feature. Many of the artificial baits featured earlier in this issue are available in floating forms and thus make ideal pop-up baits.