Hackberry is a wood that you can rush the curing process a little, so if you feel like jumping on another bow soon you got an option. Just make sure that the back is clean and sealed with wood glue, paint, shellac, or something to keep the moisture from leaking out the back and causing checks.
Then you can saw, chop, hatchet, split, or drawknife down to near bow dimensions. Let it rest in the house, especially if you can find a spot where air circulates nicely. I suggest you find an inexpensive kitchen scale that will weigh in grams. Weigh the stick every few days and write down the weight. When it is losing only a gram or two daily, you have a stave that is pretty dang close to final internal moisture rate.
Now you can start pushing it a little harder. Leave it in your car/truck with the windows rolled up and parked in the sun. Even at this time of year up here in South Dakota, some days the car can get up to 80-85 degrees. Where you are, it will get even warmer and it will help wring out moisture. When it stops losing any moisture, you are ready to tiller.
I have taken a hackberry stave from green cut to finished sinewed bow in 30 days this way in the summer. No checking, no cracking!
The key points are: 1) flawlessly clean back (easy to do with green hackberry because the bark peels off by hand). 2) Sealing that back tight. 3) Getting the stave down close to bow dimension. 4) Let it dry slowly at first. 5) When drying slows, push a little harder.
You got a great start with what you have shown us, so far! Mighty glad you decide to start posting, looking forward to your next bow!
