so its not practical for me to keep decoys attached to the longlines.....Since I switch between a rig specific to Scoters, another for Goldeneyes, one for Harlequins, one for Brant, one for Old Squaws, one for Divers and occassionally longline my puddle duck rig to keep them all rigged on longlines would require about a bazillion miles of ground line....
Since thats obviously not practical I use the same ground lines for all of the rigs and detach the decoys from the line each time, either stacking them on the floor, (in the case of the big Scoters or the Brant, and bagging the rest in (12) or (6) pocket bags. With the exception of the Scoters, some of which are E.Allens, all of the rigs are cork so sticking them in bulk bags doens't work for me.....
Using the same ground lines for all the rigs I can get away with (9) 100' main lines.....all of those are 3/8" swordfish line which has a significantly softer "hand", (flexibility), than tarred net line has. (7) of these lines will fit in a 5 gallon bucket which is loaded by feeding the line into the bucket hand over hand with NO ATTEMPT to coil it.....if you try to coil it it will tangle....if you hand over hand it it will deploy with no tnagles. I use a long line clip on the end of each line which connects to either the anchors, or to another line which is sometimes done when the water depth is deeper than average.....lines are seperated in the bucket by a simple plastic disc which also makes a nifty "FLAG".......the remaining (2) 100' lines that aren't in the bucket are used as extenders and are only rarely used. They are a stiffer "hand" than the swordfish line and can be "coiled" cowboy loop style with "some" success in avoiding tangles.
I like the heavier 3/8's line because the longline clips I use, (the heavy duty TRUE Swordfish clip with the big ass offshore swivel on them that will accept the 102# tarred net line I use for droppers), have a bigger throat and will slip on the smaller stuff that many people use, plus, its easier of your hands when you pull it, particularly when its cold.......
I don't use loops on the long lines for several reasons. First it takes up length in the line to tie in the loops, (tie a dozen loops in a 100 foot line and you end up with about 80 feet of line). Second its makes the lines too uniform for my tastes....in some places I want to cram as many decoys on as little line as possible and in others I want to stagger the spacing.....you could still do that with loops but whats the point when the clip does the same thing?--(personal taste here).....and last you cannot coil the line, or feed it into a bucket, with loops and not expect to have tangles.....for those reasons my lines are "clean" and I rely on the clips to give me my spacing....
I vary the length of my droppers and use a heavy 102# tarred net line for the same reason that I use the 3/8's line for my ground lines.....easier on the hands and the thicker the droppers are the less they tangle.....my dropper lengths are from 24" to 36" on all rigs but the divers, which are 6' and the puddle ducks which are from 6' to 9', (with droppers that long I can rig them singly using the longline clip to attach a single anchor of appropriate wt. to the conditions which I prefer over longlining when practical).
Since I never run my longlines downwind or downtide varying the length of the droppers breaks up the quack quack waddle waddle straight line look of a longline rig where all the decoys have the same dropper lengths....run across tide or wind the variable droppers breaks that up nicely....likely not worth consideration from the ducks viewpoint but I like the look better.....
With the stiff tarred net line droppers I don't have to worry about wrapping lines on any except the puddle duck decoys....on the decoys I stack on the floor I run the first layer by dropping the clip on the floor and then setting the decoys down with the lines and clips between the keels....the second row stacks like you would firewood with the clip dropped onto the backs of the first row of decoys and the decoy set on top....add rows until complete....do it right, and then re-rig fom the top row down without dropping down a row untilo the upper row is completed and you never get a tangle......bagged decoys just drop the clip into the pocket and then follow that with the decoy....no wrapping....saves HUGE amounts of time....puddle ducks with over 6' lines I do wrap.....
Thats it for me.....BIG CLIPS with swivels large enough for 102# droppers, 3/8" ground lines that are soft enogh to feed into a bucket so they don't tangle, and a specific regimen for stacking or bagging decoys.....I won't say I never have a tangle but its rare...and based on the other "methods" that I've seen in other longline setups I'd be hard pressed not to want to bet that with an experienced team that I couldn't lay out my rig as fast as even those guys that leave their lines attached to the decoys....
Steve