Because there are far more elements to handle than on wheels, qualifying for snow landing does take some time. First off, remember to extend your skis on arriving over mountain terrain. Conversely, remember to retract them when descending. A good idea is always to do it, in both directions, when reaching the snow/grass limit. Otherwise when getting to Le Versoud you burn the Teflon soles under your skis, and look downright stupid at the club workshop. Conversely, if you keep your wheels out when landing on snow, of course you kiss the dashboard, but more importantly the plane will stop very low on the slope, forcing the crew (and friendly onlookers when available) to haul it up to the top. At 10,000ft your breath gets very short very fast… A skiplane has no brakes, if you maneuver a little bit too fast on reaching a platform like Huez for example, you might very well destroy some of the aircraft sitting on the apron. Turning on snowy ground is obtained only by blowing the propeller airstream into the rudder. Not exactly efficient when compared to the way you turn on tarmac by stopping one wheel and pivoting around it. If you stop on a fairly steep slope, do it perpendicular to the line of maximum gradient. More, the plane will go down front first, you only have to apply full power, take off and come back. Less, the plane will go down tail first, a tricky situation. Even when apparently stabilized, a temperature rise during the stopover may set the craft free. Remember to sink a shovel handle into the snow, right against the outside edge of the downside ski, to prevent it moving down. If the snow is cold, or gets colder during a stopover, you will have to shake the plane to get it moving (full throttle, all aboard thrusting their hips forward together, control surfaces). Specific snow conditions (very cold, windblown or slush) increase friction. Apply power on landing accordingly and carefully evaluate take-off distance. In deep powder the forward tips of the skis tend to sink in, keep the stick against your seat. Never land off tracks after heavy snowfalls. All of these variables –weather, recent snowfalls, sunny spells in recent days, temperatures, aerology– should be taken into account throughout the snow season, as well as the current conditions on the day you fly.