Well the good side to all of this, if there is one......is that Hackberry is all over the place and it splits so easily. It's really not that hard to find some more and about 1 Saturday worth of work you can have a bunch more staves and try something different the next time around.
I kind of experimented with the batch that I cut and I put some in my hot box that were sealed on the back and ends, and some that were not sealed at all. Then I let some dry natural with sealer and without. Hackberry will check with too much heat, but not anything like osage will. I also found that the back dried just fine without sealer on it, but the ends will check if they are left unsealed.
That's about all I understand about hackberry so far except for how easy it is to split, debark, and clean up with a draw knife. I think my 8yr. old nephew could finish a hackberry stave with a little direction. It's a pure joy to work with after killing myself with osage for so long.
However it's not as versital as osage from what I've read, so there's a trade off there of good and bad.