Good point obsessed. The length of the leader does not determine the real intentions of an angler. Rather, an angler lining will employ a leader length based on the river's size and flow. No, you'll not see ten foot leaders on small rivers and little creeks, like Kennedy. Conversely, twelve-inch drift leaders will not hook many fall kings, in the mouth, on the Satsop.
Lining and snagging are two different fishing techniques (yes, snagging is a "technique," i.e. paddlefish or look up "Alaskan grey fly"). My belief is that lining is not accepted here in Washington, like in Alaska, because there are no huge sockeye fisheries in our rivers. But, wake up folks - chums are not that far behind. Yes, chums can be caught in the salt on herring and in the rivers with shrimp. But a good percentage are hooked "legally" by lining...Hoodsport, Chico, Kennedy, the Green, The Sky, the Stilly, etc., etc...Why do you think the same guys always slay them (in the mouth), while most struggle and snag them? The answer is because these anglers understand that the chums ARE NOT BITING, but they do open and close their mouths while they swim...
Gubby, some beads float providing a tad-bit of lift but does not interfere with the hook gap, or sometimes an oval-shaped bead is strung on. Some think the oval shape slides through the mouth better. But in most cases it's probably there for decoration...