Leaders ! I use a tapered contruction ending with 8lb tippet;
4ftx15lb + 3ftx 10lb + 18"x8lb
As for flies well the top points earner at this time has to be the spun deer hair dog biscuit, in a week or so when the willow blossom starts to fall and why the carp like to slurp on these is a mystery is a spun hair again to match, it needs some yellow content and from soft hair! after that if the Carp boys are using floating crust/bread a fly from 'Ramer shower sponge' available from Boots (chemists) works fine either than or something fashioned from rabbit/mink to resemble bread these all work fine when up in the surface.
Fish caught on Sunday evening, only positive take I had?? 12lb-2oz
Fish had yesterday evening, they were much more receptive, was not as sunny! helpes with the carp being able to see the line.
All these were taken on my Bloke 9# anything less and they would take me into snags and again would find it almost impossible to get off the bottom! plus extend the fight time, at this time of year when they are getting ready to spawn is not a good idea IMHO.
Hope you have a lot of success, they are great fun at the same time a little scary, esp on that first run!!!