Slinkies are better on the river.
However, if you factor in how long it takes to make slinkies, pencil lead moves right next to them. I've gone to pencil lead, because I just don't have the time to make slinkies any more. Maybe when I retire, I'll be back to slinkies.
Pencil lead takes one quick punch with the special pliers, and you're done. Also, one advantage with lead, is when you make one too heavy, one quick snip, and you've got the right bounce on your drift.
SKP