When Beach fishing with no danger of rocks, sometimes I just attach a breakaway to the braid w/no leader. Just becareful of a couple of things, when landing the fish...braid will slice ya like a knife, the bigger the fish, the sharper the knife......and if Bl
oofish are parading the beach, I'll add the leader just because it's easier to tell on the leader, if the line gets damaged from Bloo-Teeth than on the braid.
Anything but beach-fishing gets a leader, swivel at the top..(which is where I'd tie a teaser if I opted to use one, hardly never do) and a breakaway on the lure end.
I used to do what Jimmy did, start off w/a long leader - end up with a short one. Another problem other than always having to re-tie with that is the knot itself. In the heat of good outing, a knot tied at home is more likely to hold than a knot tied while your buddy is landing on a lure that you're about to change over to. Just a little more preparation I guess. I do recommend the Breakaways, the larger ones though - I don't like tie-ing to split rings. I've been lucky at times to find the line working it's way out of the ring, and other times wondering how the lure got off leaving me a pigtail, but without breaking the line ???? ....
