BAB has nothing to do with being able to attack with your off hand.
A high BAB allows mutiple atacks when using the full attack action - using your primary hand, otherwise a fighting wielding a greataxe would never be able to make multiple attacks per round.
I understand this. The reason I wanted clarification was because I planned on having my psicrystal hold an extra focus.You cannot use psionic shot on more than 1 attack per round since you must expend your psionic focus in order to do it.
So Mind Arrows are thrown weapons?Create them in both hands. Now I'm wielding them.
No I was just using thrown weapons as an analog to the mind arrow since those are real weapons that you can apply ranged feats like rapid shot AND TWF feats. Soul bows create the arrows in their hands and instead of manually flinging them, (I assume) they mentally propel them forward. See quotes above.So Mind Arrows are thrown weapons?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.