Two Short Funds to Consider

If you believe this decline has room to go, there are ways short of shorting (no pun intended) to profit.
Two mutual funds are of note: DOG (Short Dow 30 Proshares Fund) and SDS (ProShares Ultrashort S&P 500). Neither involves margin, liquidation of long positions, or options. Simply buy them as you would any other mutual fund - they move inversely to the market.
So if you had a portfolio that was 70% long stocks and 30% cash, buying DOG with the cash if you are bearish moves you to a net 40% long position.