Thanks cyborg and Newmarket. I agree with keeping it simple and I much prefer the idea of a running lead to a fixed one - As this is what I have been using for years for other species!
these days the way to build a rig is to have a look at what Danny, Kev and all the others sell for terminal tackle then buy the lot.
then you have to get on the bank and see how many components you can squeeze into the one rig and that is the one you will catch on
or!!! you could just keep it simple
naked mainline +free running lead to short ESP coated braid hooklink in 20lb.
dont see the need for a leader (unless you wanna look like a poncey git) and their is no need at all in any form of angling for leadcore. Evil stuff