The trader says to sell these stocks now and buy them back when their yield is in the 4% to 6% range. 

There may be just a small problem with that plan. A typical portfolio invested in these sectors likely yields 4% to 6% today.

These seniors are undoubtedly well positioned, are receiving in the area of $40,000 in dividends annually that will also likely attract little in the way of tax and they'll undoubtedly see that income rise year after year. 

I'd sugest they sit back, enjoy life and watch those dividend cheques continue to grow. Who cares whether the the share prices of the companies they own rise or fall in the short term?  These seniors should not.