Hi!!
Iwe got toggels attached to center B-lines. And I just pull them about 10cm with my fingers. That disturbs the air flow over the canopy and I get a perfect strait down sink and the good thing is that the recovery of the canopy is much faster and smoother. If you use steering toggles or rear raisers to get the stall, you will get a lift before it stalls and the recovery is more "violent". I hope this answer your Q:s