I am looking to pick one of these up and wonder how many of you have one. My main question is that while you can tune it any way you like, I wonder what is the most commonly used, and the "why" that tuning was selected. I would probably lean toward open D, so I can slide up to an E on the 2nd fret. One guy I know who played here a lot but stopped coming to the mainland (he lives in Hawaii) liked open G, but for me that puts the E chord up at 9 and that sounds to "high octave-y) for my ears. And there's always standard guitar tuning, but that same high E chord dilemma would be there.

So any lap guitar players, what tuning do you use?