Need a sledge? If you have one of these popular plastic toys you.ll find that it does the job perfectly, particularly as a pullalong. The underside is a good shape and material for sliding over snow.
Step 1: Tie rope around horse's neck
Just tie a rope below handles, keeping rope fairly low down. Pull in a straightish line on snowy grass. For sliding solo downhill this might be hard to steer. Centre of gravity is quite high.