I used the same leader. After cutting it to change lures about 5 times I swap it for another full legth. I Don't carry around a bunch of lures with 5' leaders tied to them. In fact I don't even carry rigs. I always tie them on the spot, but thats just me. I can snell a hook just as fast as or faster then you can untangle a rig knotted up, with half your lures stuck to, it at the bottom of your box.
You can buy precut 47" leaders in most bait shops. They are shippd in tubes and are straight! Leader on a spool looks like a slinky when you go to tie a rig.