PolePack

The Polepack is a single wheel back or pannier carrier for the trail or the road. Use behind bike as trailer or put on short ski for over the snow travel.  

This was a great trip up to Camp Muir, pushing the Polepack with ski makes gear hauling a breeze. The pole will work with most any pack.

Any time you are not moving you're resting because the load is always on the snow, so picture taking is a snap!

(Disclosure: the reviewer is the inventor of the PolePack.)