Panfishing tips for using tubes?

i live in tennessee and i want to start using tube jigs for catching sunfish. what kind of jig heads should i use? 1/32 ounce? and are there certain jig heads designed specifically for tubes? also, the water temp is under 50 right now and i've been having some decent luck with crappie nibbles on a bare hook on a split shot rig...do i even stand a chance at catching gills with tubes? and what methods do you suggest i use when they're hesitant to bite.