I fish for smelt at night. I have a green LED light from fishing lights etc. It goes all night.
2lb test line
Hali tied at the bottom (Colors - Red Glow, Blue Glow, and Gold have worked great for me)
2 tear drops(Glow colors) tied above the Hali 6 to 10" apart.
Tip them with wax worms, spikes, or minnow heads depending what they are biting on.
Use my lowrance to find em and keep on them as they change depths. Wait a few seconds after you feel the first bite before reeling up. Doubles and triples are very common.
If they are not bitting and are right under the ice I grab my homemade smelt spear