Hi Wizzy.. I think you mean 6 posts up, not the therapist post...
For Gliders the figures are soooo small. A typical 350kg glider with 35:1 L/D
has a drag of just 10kg... 5kg Induced drag and 5kg Parasitic. So even sticking your hand out of the DV window is likely to double your Parasitic Drag. I also think that the fuselage may not contribute much to this drag, as the tailplane is providing negative lift, so it's Induced drag gets counted towards the parasitic drag. One reason for putting water ballast in the tail.
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