Mining in hisec is not the safe fluffy bunny experience it once was, even if the roids were good which they are not (even in .5). Between for fun ganks and things like this http://greedygoblin.blogspot.com/201...new-order.html you have to keep your eye on what's up even in hisec. Mining in lowsec is usually good for a small amount of time until the random neutrals (are they good guys or bad guys, or are they doing something else and not interested in you?) show up. Or the Pirates who you don't know if they're Pirates. Or the Pirates you DO know that are pirates. We've had folks try to mine in my relatively quiet wing of lowsec and it never turns out well, as they end up docked to avoid the random pirate or dead by the hand of the random pirate. The trick that Meeo discusses above of having a few cloaked ships watching your tail is fine, but that's two less pilots that could be mining and making you isk instead of standing guard.

I would recommend joining a nullsec indy renter corp where you can mine in relative peace. You'll have to dock up much less, get attacked much less, and be able to (most likely) sell your minerals directly to your corp/alliance (and let them do the logistics of getting it back to hisec to sell).

TLDR hisec roids suck, you will die in lowsec (or spend a lot of time docked), find a good corp and go to nullsec if you just want to mine.