Not 100% sure but sounds like a spreader rig. I have heard of them used when I lived in ontario for bottom hugging species like whitefish and walleyes, but haven't used them them here for anything.
They are used by placing bait like live or dead minnows on each of the hooks then letting the weight on bottom. The baits are spread out by the wire attached to the hooks. Pretty much just a way to position a few baits just off the bottom.
Probably would do alright for pickerel, but as mentioned above probably not the best for trout.
I like finesse baits when trout fishing. Get yourself some small split shots and hooks, and a few micro jigs in various colors.
White, pink, orange, chartreuse, that's a good place to start. Some of the micro soft plastic jig bodies are alright too like 1'' tubes, or the gulp maggots, wax worms etc. the trout dough is pretty popular as well.