Please provide a photo how they are doing this at 5.000 ft and 80 kts.
Thank you.
John did not specify an altitude, nor a speed

We normally have it
done at ground level with the glider stationary. I won't get into the
ASL/AGL debate to figure out what altitude you suggested.
However, I envisage hiker's crampons on the shoes and pitons pushed
into the wings so they could crawl out and wash the bugs off without
falling. Granted, this might make a re-finish necessary, but it's up
to the owner to decide what modifications to make, and whether the
mods would be legal for the CofA.
Oh... what does "SCNR" mean?