What will be the secret to investment success in bonds during 2013? According to Daniel Putnam of InvestorPlace.com, investors' best bet may be to invest in areas of the bond market least likely to be hurt if yields on U.S. Treasuries begin to rise. Among his picks are PIMCO 0-5 Year U.S. High Yield Corporate Bond Index Fund (ticker:HYS), Market Vectors International High Yield Bond Fund (IHY), Market Vectors Emerging Markets High-Yield ETF (HYEM), and a series of target-date funds from the ETF issuer Guggenheim. These funds are high-risk propositions that aren't for everyone, but they do offer diversification and a way to dampen the risk of rising rates. Learn more about these funds here.