How to Troll

[Cantstopfishing]

Hey guys probably a stupid question, but how do you effectively troll? I just got a new little boat and tried throwing out several different types of lures. I would let them sink down, but then as soon as I started moving through the water the bait would just come right to the surface instead of staying down low in the water. Do I just need to add a bunch of weight to my line or is there something else equally obvious I am missing?
Thanks,

Nate
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