There was some flying early on but then the rain started as forecast about 1100, and everything was put away. Meanwhile, Regional Examiner Adam was quizzing Rowan and Jack (from Mendip) in preparation for their BI flying exercises. The rain cleared through nicely about 1530 and we managed four aerotows in the nice clear sky (well there was just 1 squally shower) to complete the spinning exercises. K21 HCX was rigged after its annual, although the new canopy strut and bracket are still awaited.