when one of the 50K accounts drops to 30K ill wire 20K into it, then the second account will have 70K and ill withdraw and keep the 20K on the sidelines, sometimes i do one transfer a month, sometimes three a month, my leverage is 100, and i have not had a margin call in 2 years, i have never closed my position since opening it , and i wont be promoting any interest free brokers.