If you attach a braided loop, use a loop-to-loop connection to your leader butt by forming a loop (perfection or non-slip mono loop, or other) at the leader butt.

Of course, you don't *need* to use a special braided loop at your line tip. You can secure a short, permanent butt to your line using mono that matches the stiffness of your line tip. I've had a spool or two of material specifically marketed for such use, but there are many choices about. A nail or needle knot secures it to the line, then form your loop 6-12" away. I still opt for this setup often, as the needle knot is less obtrusive, holds no water (problem with braid), and can be made as smooth as glass with a dab of pliobond or aqua seal. Sometimes I make the butt a few inches longer and just secure the leader to it with a blood knot.

Use a straight section of mono in lieu of a tapered leader if it suits your needs better, but straight mono is seldom the better option.