Hello there AquarianPath, and pleased to "meet" you.
Wow, your dad is a _handful_ !!!
I'm sorry to hear you are dealing with the chaos of his alcoholism. My alkie parents were like that too. It took me a long time to learn how to keep them out of my life and my thoughts.
I found meetings of al-anon to be a huge help for me. Is that where your step-mom goes on weekends? You might want to check them out, see if you find them helpful. You can find them in your phone book. They have wonderful books and pamphlets full of suggestions and ideas on how _us_ kids of alkies can keep our sanity in spite of their chaos.
Considering how abusive he is, I think you are totaly justified in ignoring him on the weekends. He's not going to act any different if you answer him or not, so why bother. That's what I did with my parents and it worked for me.
Have you read the "Sticky" posts at the top of this forum? There's a lot of great information there, see if any of that helps you.
Welcome again, I'm glad you decided to join us.
Mike