Getty Images; Alyssa Powell/BITraders and central banks should increase exposure to gold, Bank of America says.The strategists say Treasurys face risks as US debt levels soar. The analysts see gold hitting $3,000 an ounce by the end of next year, implying 11% upside.Gold is increasingly attractive as other traditional "safe haven" assets face mounting risks, Bank of America strategists said.The strategists said investors, including central banks, should rotate into the precious metal, which bulls tout as a hedge against inflation and debt debasement resulting from rising government borrowing.