Whenever the stringing tying discussion comes up and always like to post this very helpful link:
http://www.schrammguitars.com/stringingmethod.html
Not only did the late John Gilbert build many fantastic classical guitars, he also left us this ingenious method for handling the pesky treble strings. I've been using it for over 10 years and it's fantastic - so much easier, just as secure, no harm to the guitar or bridge tie block.
12 hole tie blocks also make things easier as well. Definitely a feature to look for when your ready to buy your next nylon string guitar.