You do not have to troll for them, but w/o riggers you can use leadcore line, or snap weights off Church boards/big boards, or also "dives to" Rapalas if doing so.
A lot of guys jig them up with hair jigs tipped with a crawler, or by ripping sonars.
Thing with the Sonars(Heddon) or better word, blade bait, you foul hook more than legal hook, at least from what I've witnessed.