On the line tie end of things. Lamar and I agree on the clip right to the bait's eye. These are very, very light in weight and their length becomes a critical factor too. On baits the next size I but I clip to that as well like a split ring, yet on these really small baits a clip is lighter in weight than a split ring. Casting these with the line tied directly to the eye can cause the know to move either side to side or up and down on the eye.....all of which will mess with action. The tiny clip will let the bait do what it was designed to do as long as the retrieve is kept in check. I mentioned line earlier in this thread. I use Trilene XL exclusively in 4 pound on most of my crappie rods. I use Nanofil #3 pound on two that I take when dock fishing and things are basically vertical fishing. One has to be aware of the stiffness of even light lines as too stiff a line can mess with action at the lure. Lines that sink can screw with the action of the lure.
When one steps down to the size of these little critters its a whole new game and what one uses for everyday crappie tackle is most likely too stiff, too heavy, or retrieved too fast. Its not just one thing....its a combination of things that have to be considered and trust me, one little thing cn upset the applecart in a hurry. I like the challenge of fishing these super light weight lures, but honestly it may not be everyones bag of oats.