You can do it. In order to generate a decent income you must go with the more volatile stocks. You will be very lucky to sell calls three or more times before either a) the stock takes off. You have sold your top and feel very silly as the buyer of the call exercises at expiration for half the price it was three months earlier.
or b) the stock drops. Now you can't get a decent price for a call and either sell a call that locks in a loss or wait, without income, for it to come back. At this point it is probably better to sell at market and start over with another stock.
Selling covered calls is a mildly bullish position. In a fairly stable market it can be quite profitable. A number of years ago several mutual funds tried this strategy and found their good stocks got called away and they sold the dogs at bad enough losses that overall, with stock selection by "professionals" they couldn't make it pay and the funds disappeared.
Often I sell calls on a stock I'm thinking of selling, and if it is called figure I'd have sold it anyway. Situation a) happens to me often enough that
I don't sell calls solely for income.
Good luck! Chris