The front developed quickly after takeoff. Express elevator on the front to 1700m and 600m above cloud base and a failed attempt to reach the cumulus behind the front by diving under it. The Ka6 is not the best glider for penetrating through sink. The ventilation slot in the front of the canopy is not a good design for rainy weather. If closed, the canopy fogs over. When open a lot of water that flows over the nose sprays into the cockpit showering the pilot. I was soaked on landing and so was also my parachute unfortunately. Lots of mopping up after the flight. Edited from 40 min flight.