Boilie Funnel Web system
The inherent problem with pva stringers (that is 2 to 10 boilies threaded to a piece of pva string and ties to the hook before casting) is the fact that pva shrinks as it melts.
If you do not space out the baits and make sure they stay spaced in flight there is a risk that they will get stuck together as the pva string melts, contracts and pulls all the baits together.
The water can no longer attack the pva because it the boilies are glued together so the whole lot ends up stuck in a line which the fish will have to swallow whole or knock around before each bait can get eaten.
Using Korda Boilie Funnel Web system
Mix the boilie crumb as groundbait as in step 1, but in 50/50 ratio. This allows the boilie mix to break up on the bottom. Biolie crumb alone would remain stuck together.
Thanks to Korda for pics and info