I'm using 3.5 ft long ribbons (because that's how wide my kitchen table is).
Played in about 8" of powdery snow Sunday, and there were times only a few inches of ribbon were visible in the snow.
Yes sometimes if the snow is straight power 4 foot of ribbon isn't enough. Usually during January the snowpack sets up a little bit and the disc doesn't dive as far under. And when walking on the snow pack you might get lucky and only sink half way down or even stay on the crust if it's thick enough that's always welcome
. I remember trying to play after our snowvember storm(2014) 7 feet of snow in 38 hours the parks 30.000 pound hi lift was having a problem handle the job of clearing the entrance and lot if I remember correctly the state brought in the big boy H-Series snow bower vehicle it's a beast 5000 ton of snow per hour throwing it as far as 200'