Lazy Eights were taught to me as a more sporting way to get rid of excess altitude in a glider than just popping the spoilers.
There is a wingover at each end.
It helps to choose a road or fence line for alignment as with many aeros.
In a Blanik you accelerate to 70 kt. before pulling up and adding bank using rudder for co-ordination.
It is a positive G maneuver at the apex of the turn. As you gain familiarity with the maneuver maximum bank can reach the 90 degree vicinity and you begin to get into some very atypical aerodynamics.
At the apex the stick will be well back. You then begin to take off bank and reduce pitch to regain airspeed.
You could characterise a wingover as aborting a barrel roll approximately a quarter way through.
Please review first in a/c with qualified instructor at sufficient altitude. Attempted barrel rolls and wingovers by the untutored do sometimes run out of altitude before the maneuver is completed with fatal results to both occupants and airframe
