Sbirolino with a soft lure is bugged and no technique will work, no message will appear above tension bar. However Taimen used to bite good on the blue foam fish while mimicking jig step retrieval. You can try use that. Simple jig step rig works as well.
Notable: Sbirolino with a lure like for ex. small spoon can be jig stepped or used as stop n go and so for, don't mistaken these two.
Sibolino in general is used to cast small lures over wast distances, and taimen like to hang around the other side near rocks of Belaya in my experiance.