its a bit like stick float fishing off the bottom 6 inchs off bottom etc,barbel take sweetcorn and even pellets float fished,so in theory they should, might have to hav a try with a pop up bait
well i tried popup tonight and first chuck a small barbel about 2lb followed by 2 chub around the same size,never had another bite after 9pm and i tried different baits, i still cant convince myself that they work but i will give them another go tomorrow.
Hi there I fish the Dane& Trent and use popups all the time I've modified my usual rig to take a popup,I'll increase the hair length and put a BB right under the bait then shave it until it becomes critticaly balanced the bait then wafts up and slowly drops back hopefully like a freebie the slightest suck and the bait shoots into the mouth, fantastic for shy feeding fish.