I like the coal issues they all have a very high b

I like the coal issues they all have a very high beta..have wide interday swings.I always only sell puts on issues that I would like to own outright..the premiums have been ranging from great to insane partly because of consolidation in this sector..I have sold naked calls before but coming within one month of getting destroyed broke me of that..I really have only done some basic things in going long..spreads and straddles..but have a lot to learn here..