If you have considered every other possible angle; the weather, breeding season, the water conditions, your equipment and everything else, it is possible that trying krilled maggots might help you to up your game.
The maggots are dead, and that is a massive advantage. Yes, live bait will serve to attract the fish through movement but the fish need to be a little closer, whereas smell travels a lot further. What’s more, these maggots will not have any chance of wriggling away from your swim.
They are also extremely diverse. Not only can you use krilled maggots directly on the hook for fishing but you might also consider mixing them into groundbaits or spod mixes. Your options are pretty much endless.