Selling PUTS strategy IDEA

Hi there, 

I just got an idea, but never tried it.
I would like your opinion on whether this could work!

Imagine this:

stock ABC is trading at $6.20

The $6 strike monthly put option nets you 0.58

Now if the stock goes down 20 cents to $6, you get assigned the option and buy 100 shares of the stock.You get rid of those shares as soon as you are assigned them. Assuming you manage to sell them fast enough, you should be able to net the credit you received for selling the put, minus the spread at the time of buying/selling the stock. So even if the spread was 30 cents, you would net $28. Not much, but kind of risk free.
Does it make sense?
Is it doable in real market conditions?

Thanks

Federico