Freeze Protection

[Jon]

Well I blew down all my water lines this week and now its 20 degrees
outside. So I hope I got all the water out of both lines as it would
be hell to repair water lines that were not drained down. I also set
up a oil electric heater in the coach just for good measures. Oh yes
one more this is that sence only haft the coach has fresh water lines
running from the back I also hung a heavy blanket from a rod (like a
shower curtain) in the front end inside of the coach by the bathroom
door.

Now I was wondering has anyone here had the misfortune of not checking
there water lines before a big freeze? And do the newer coaches have a
better system to keep the internal pipes from freezing?