The odds are that they will not work in the present. I prefer to have two accounts running with my broker, or one account large enough to trade a system and take some position trades. I will add in closing that an added benefit of systems trading is the potential for diversification that it offers the uninformed investor. For example, a doctor with plenty of money but no time to learn or actively trade futures would do well to allocate a certain percentage of his investment portfolio to a futures trading system. He would also be wise to allocate a certain percentage to mutual funds, real estate, bonds, and so on.
Diversification is the golden principle of money management.
And no money manager should neglect the tremendous opportunities inherent in the futures and commodities markets.