The solution is to give up on moderation. If you are an alcoholic moderation never has and never will work. I doubt there is one person here who has not tried moderation and everyone of us has failed miserably.
Blackouts are a symptom of alcoholism but until we treat the root cause we are condemned to repeat the alcoholic behavior with ever worsening consequences.
There is a way out and it is called recovery unfortunately moderation will never be part of recovery