How to make ntfs-3g drive visible in Finder
I finally got it working. I used the info at this site. The instructions are now included in brew installations.

Basically use brew or macports to install ntfs-3g, fuse4x, and fuse4x-kext.  If you have an icon in System Preferences for fuse or macfuse, remove those, you don't need them. Follow the instructions after you finish installing them. You can also use brew info to see those instructions if you missed them before.

When I did brew info ntfs-3g I found this.

To replace the default Mac OSX automounter:
    sudo mv /sbin/mount_ntfs /sbin/mount_ntfs.orig
    sudo ln -s /usr/local/Cellar/ntfs-3g/2012.1.15/sbin/mount_ntfs /sbin/mount_ntfs


I also did brew fuse4x-kext and found this.

  sudo cp -rfX /usr/local/Cellar/fuse4x-kext/0.9.0/Library/Extensions/fuse4x.kext /Library/Extensions
  sudo chmod +s /Library/Extensions/fuse4x.kext/Support/load_fuse4x


After running those commands I got the ntfs drives to automount and be visible in Finder with read/write access.