Both are good techniques. I tend to use a t-rig more simply because I have more confidence in it. I'll use a shakey head if I'm skipping under tree limbs and docks because I feel like it is easier to skip. Shakey heads also seem to work better than t-rigs by downsizing the weight and worm size when the bite is slow. You can't go wrong with either. Just go with what you have the most confidence in and you'll do great.