Naturally, most investors are hoping that the current stock market rally will hold and we’ll embark on another bull run. But what if it doesn’t?

Nathan Slaughter, the chief investment strategist for The Street Authority, says putting your money only in individual stocks sets you up for “repeated sucker punches.”

This sucker-punch effect is even stronger as US stocks whipsaw mercilessly because of continued concerns over the housing and credit crises.

Diversifying into the 150 available exchange-traded funds – ETFs – paying double-digit yields can change that.