Okay I am thinking I am going to need someone to backpack through South American with me. I hate to say it but heather would not be able to do it because she has already got in to a unhealthy life style.  I need some one who would be able to walk at least fifty or so miles a day if you are in to this kinda thing you should leave me a comment  and you should take a look at this site it is a really helpful page