How can I save and load an entire hashtable using playerprefs, or on all systems.?

Hello, I am an intermediate user of uinity, I started using it nearly a year ago, and have a question. Right now to save and load a game, I store everything I want to save into a hashtable, then I use the propertylistserializerr from the wiki to save it to an xml file.

So what I would like to do is save the hashtable as a playerprefs key/value pair. The propertylistserializer does not work for ios or android, and I would very much like to target those with my program. Any ideas?

-Patrick