Imagine strong thermals rising through a strong wind. Here we have two types of current colliding at right angles, so there will be significant turbulence. Thermals therefore will not have consistent texture or shape. When wind distorts them, a subtle variation of the uniform circle may help to maintain position within their cores. Flying a broad, flat turn on the windward side of each circle and a tight, steep turn on the lee side can offset that tendency to drift downwind from the best lift. This is essentially the same maneuver that power pilots refer to as ‘turns around a point’. Of course such a complication could be overdone, and the thermal lost altogether. Experiment with this, and return to simpler techniques if they seem more effective.