Cure for that is to have the front of the ski's spring loaded, with the rear having a thin wire to limit travel.
It's how I setup mine, works good too. Goes to maybe 15 degree up in flight, but settles right in during landings.

A runner is helpful underneath each ski, to keep it tracking where you point it on the ground. No runner and it's amazing how well our model's will go sideways on the snow!