Three high-octane monthly income stocks -- sporting yields ranging from 5.3% to 14.2% -- have the tools and intangibles needed to pad investors' pocketbooks.For more than a century, the stock market has been a money machine for investors with a long-term mindset. Although the market has endured its fair share of corrections, no other asset class has come close to matching the annualized return of stocks over long periods.With thousands of stocks and exchange-traded funds (ETFs) to choose from, there are cou ...