I have spent several hours and multiple restore tokens to update my Garmin, only to have Hughesnet drop me and now its all for nothing.

I do not disagree that the library is probably a better option.  Just letting you know that it can be done on HN service WHEN it is working as it should.  Note that my last couple of map updates were 4-5 GB and I was able to squeeze them in between 2 AM and 7 AM.  Again it is highly unlikely that it would work right now.