My opinion, I stress it is just my opinion, is that DJX is option is a slow mover. It can be used as an hedge against a portfolio. Leaps can also be bought just like any other equity leaps.
OEX, SPX and other specialized options would be better for trading and quick in and out. OEX had a range of about 25 points on Friday. OEX and SPX would have been a better choice in those volatile periods.
I don't have any specific strategy now on DJX. I would like watch, wait andd learn before plunging in.