Will a magnetic sheet target sore stifles adequately or is really necessary to buy separate stifle wraps? 
I recently started using a magnet on myself for lower back pain an I can't describe how much it has helped! And now I want to cover my horses head to toe in magnets but I can't really afford all of the things. Stifles are probably top priority but I'd like to get the most bang possible for my buck.

Yes a sheet would work, but its got to be a good one. PHT would be my choice..