Ok, here is one method I was going to keep quiet about, I use it to get baits into awkward positions on small rivers, I trot PVA bags. You get a solid pva bag,I use the NGT ones 100 x 130 they are nice and thick. In the summer you have to judge the melt rate,size of lead and sometimes double bag. I put the lead, terminal tackle and freebies inside the bag with tubing up the line. The bag is then sealed around the tubing, the line above greased. You can run the bag into most snags/awkward areas, when it gets into position you hold it in place and the bag will melt, as it bursts feed it some line, the terminal tackle will then drop even further downstream with the flow. Importantly you do not get the loud lead entrance that will spook most Barbel. Its caught me a lot of good Barbel over the years,hope it gets a few for others here.