Regarding the Dogs of the Dow, you should understand that the system does not work any more.
Examine the performance listed on the web page whose link appeared earlier. Performance has been declining every year for the past 5 years. The creator of that system was interviewed on one of the financial channels within the last month or so. Probably CNBC, but it might have been one of the others, as I watch them also. One segment of the interview began with the system creator flatly stating the that Dogs of the Dow does not work any more.
Bottom line: don't trade any money using that system, let alone the thought of using your IRA account!
Sy Harding has an excellent seasonal timing, no-work system that you might want to consider for your IRA. It can be Dow based, if you like.
http://www.streetsmartreport.com/
As for shorting, there are mutual funds that offer shorting. The best known of these is the Prudent Bear fund run by David Tice, who was on CNBC as recently as yesterday. The low NAV and minimal requirements will allow you to hedge or just short. You can be as passive or aggressive as you want.
Lastly, concerning Gary Smith, I too read his excellent book. Gary has since disappeared since the crash of 2000. He had an article or two in Active Trader magazine, and that is about it. His system of trading mutual funds might not work anymore. Even load funds like Putnum were offering 20% annual return in the 90's. It was not that difficult to make money when the stock market kept going up. You cannot trust any mutual fund or trading system based on mutual funds now.