No tillering stick for me. They're too dangerous, hold the bow drawn too long, and don't hold the bow how I do.
Many years ago I had one explode in my hand at full draw. I did a stupid thing and tried to make a selfbow with an ornamental arborvitae from my yard. It disintegrated, but no injuries.
Nowadays, I tiller them completely on the rope and pulley system, drawing them how I will by hand, and when I feel it's finished, draw it another 50+ times. I have a lot of confidence in it when I first draw it by hand.