Try a float, a friend is lucky enough to have access to a stretch of river that has some cracking chub, a few large barbel
( we think) due to him having occasionally hit fish that he could not stop on the gear he was using , and a lot of silvers, he targets the silvers and chub using a float, and very successfull he is as well, I tipped up one day, on a guest ticket, thinking to try and wheedle out one of the mythical barbel, so tried the static bottom bait, after an early baiting programme, I started to get taps and the occasional better bite on the rod tip, but could never hit anything, I tried feeling for the bites touch ledgering, the bites were still as readily felt, but could I hit anything, no. I was obviously suspecting Chub .I was getting the bait ( pellets and spam ) attacked every cast, eventually my mate walked up, watched me for five mins, and started laughing.. then he told me that the river was loaded with signal crays, and that was what I was feeling .
I was quite dejected, that is when he told me the way forward was a bait moving at the same speed as the current, which is how he fished . I decided a rolling bait may work, no, it was not moving fast enough, and was still getting mauled . Eventually I gave up the idea and started to feed bread crust floating down the current, soon I had the chub feeding in a frenzy, and made do with them for the rest of the day .
Looking back I could probably have honed my approach to trying for the Barbel on the float , but I think based upon what I had seen maybe using Maggots, or Caster would have been a good move, although I could also have float fished Spam, which tbh never entered my head at the time.
Anyway.... when all else fails, try a float .
David