Use the Bait-o-Matic Blueprint with 5 Shiny Baubles, a Hair Trigger, and 3 Rat Traps to create the Gnomish Bait-o-Matic.
One o' the gnomish engineerin' trainers gave me a blueprint fer a fancy lure he says'll help me catch fish faster and keep 'em from gettin' away. The whole thing sounds a mite silly if ye ask me, but I'll try anythin' once.
Here are the blueprints. Ye're going to need shiny baubles, which ye can buy from my assistant inside the buildin', a hair trigger ye can buy from an engineerin' supplier in Tinker Town, and a few rat traps from the Deeprun Tram.