As well with any stock the dividend or in this case "unit"... will not double (or triple depends on split) unless the dividend goes up doubly! I suggest you not look at yahoo for any answers (and esp quotes a mess and out of date sometimes) but stockcharts (dot) com has a nice how to online school).
Another this stock has run up considerably (and since I as well trade - know full well that being in the news creates lots of attention beside the fundamentals - and traders do NOT care about fundamentals (I do as I hold two positions - one trading other hold so on).
So reason for major moves sometimes and if cc is not good I expect some big move down, lol...
More then one way to skin a cat... I can just easily understand patterns and charts... I have been in both ARLP and AHGP for a long time.. reading charts helps one to brace for pps "events" lol... as well fundamentals and overall market is important... I am not a trader per say... Best... the results were more then steller... mho.