Nah, I no longer think a skid plate is necessary at all. The one time I had trouble was in December when I had to drive through deep snow drifts. I got snow packed in all around the engine, including my air filter. Since then there has never been that much snow on the ground this winter. From now on I will either just not drive when it snows so much or take a different vehicle.
92 Probe LX
some stuff is on the car that wasn't when I bought it, some has been removed