DO NOT GIVE UP!!!
I don't have specific contacts for Arkansas, but suggest checking out this website for general info:
http://afarcry.info/
You can also email its founder, Don Christensen, at
[email protected]
And don't be bashful about asking your hunting buddies for help. When ALS robbed my muscle strength, put me in a wheelchair and rendered my arms useless, I found that my friends--and even strangers I've met at hunting lodges--were happy to help an avid hunter keep enjoying the outdoors. If you make the effort and stay positive, you'll find solutions.
Also, consider using a crossbow since it will be easier to shoot left-handed than a vertical bow.