Developing custom Ubuntu live system

[Amichay P. K.]

Hello linuxer's,
I am trying to create custom Ubuntu live distribution.
I was trying to use tools such as UCK, remastersys and more, but I find
them weak and without enough options that I need.
As I said, I need to make this distro live, but I also need some programs
to be installed and configured automatically for the live user, and I can't
really find any useful info about this online.
So I'm looking for two things - documentation about creating custom Ubuntu
distro manually, and how to save settings, files, profiles and programs to
be used as default by the live user.
Any help would be appreciated.
Thanks in advance, amichay.
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