The solid bag method with a small balanced hookbait is almost a ‘cast anywhere’ guaranteed presentation. When packed correctly, a solid PVA bag will never tangle, and always creates a consistent trap. You can add all sorts of PVA-friendly liquids and powders to boost the attractiveness of the parcel. In my own experience, the only limiting factor occurs when fishing in very deep silt. Sometimes the whole PVA bag can sink so far into the silt that the benefits are largely lost.