You will need to learn how to tie an
Alberto knot to join your leader to the end of the braid. It appears daunting at first, but with a little bit of practice, it's easy as cake to me now. Best part is, it's not really a knot, but rather a
braid of joining lines. Very slim knot and very reliable.
Others prefer the Uni to Uni knot but I dislike the noise it makes clicking through the guides. A reliable knot but bulkier. JMO.
