Is there a brand or type of electric fence system that seems particularly well suited for hunters & campers in bear country?

I know it's not 100% effective for keeping out bears and such, but am looking at ways of making my backcountry hunting & fishing camps a bit more secure.

Already keep clean camp, use bear boxes, etc..

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I often camp alone or with one or two other folks, hunting or fishing. This is a typical camp photo. My small trailer does have a deep-cycle aux battery that is pretty under-utilized most of the time.

Thanks! Guy