I want to join this retail brokerage however they pay not too good of a interest rate on EOD cash balances. Because retail only gives you 4:1 you have to put a lot of assets in. If I put cash I'm screwing myself because of the bad interest rate, however I don't want to put ALL in stock because I don't want all that risk. Can I trade off the margin say a money market fund? or any ideas? on how to get around this and not get screwed?