i would love to do hot wire....   But My ground is too dry most of the year to get a good ground.    9-12 inches of precipitation per year.    And a perk rate that will drain a three thousand gallon water tank without leaving a puddle.
Coyotes and Feral dogs are the biggest issues...   We do have desert fox but I haven't seen any I think the coyotes drive them out.
I have considered Bipolar hot wire....  Positive on one strand negative on the other...   And they do make bipolar Tape...   But I haven't come across anyone who has used it.   I will be needing Horse and goat containment as well.
I read the first page of the link 
@cavemanrich  posted and the link offered up many ideas I hadn't considered.  
deb