The rule to take head wind turnpoints low and rear wind turnpoints high is generally known. An exact measurement of this effect would be helpful to decide whether a current thermal is worth taking before moving on to the turnpoint.

The idea would be to compute the current loss (or gain) while thermalling due to the wind component on the heading to the next turnpoint and then compare it to the gain (or loss) while thermalling in regard to the wind vector of the next leg.

As an example the infobox may show [-0.4m/s] before a headwind turnpoint. This would mean that if I take the turnpoint and return to the same thermal I would have a calculated benefit in thermal strength of 0.4m/s in comparison to taking the thermal before the turnpoint. Of course the thermal does not actually get stronger, but I avoid the drift away from the turnpoint and profit from a drift toward the next turnpoint. This effect can be expressed in the unit of climb to allow a direct reference to current and expected climb.

At the moment this ticket is just a general idea for an enhancement. It would be necessary to put a bit of thought into the necessary parameters and formula for a correct calculation of the described effect.