Greetings Community-

Over the past several years I have enjoyed backcountry fishing in many areas, most recently in the Beartooth Mts. in Montana. Several times, I have thought bringing a lightweight device to reach deeper water and/or areas where the shoreline is not accessible by foot would be highly desireable. I've speculated that a small inflatable device sufficient for one person and bare minimum fishing gear might exist. 

This device must be reasonably light, as it would be utilized during backpack-accessible fishing.

Has anyone come across such a product; or even better, utilized one?