I used to do it from 6 am to 9 am PST.
So the answer is yes, it can be done.
The opening has a lot of opportunities, but you have to be really careful. I trade only equities.
Check your company Internet usage policy. No, they will not log your password for yahoo or gmail account. Unless they are looking for potential lawsuit.
When a company goes private or merge with another, is the short force to cover.
Some of the homebuilders have huge short interest. Could spark a short squeeze right?