That stinks man. Thats a pretty bad crack but if you're dead set on saving it rap it with b-50 or dental floss for about 3 inches on both sides of the crack and soak it with superglue until it wont hold anymore. It "might" hold up for a lightweight bow but you never know. You wont be able to scrape on that part of the belly after you rap it so you'll have to work the poundage down before you rap it. Might be kinda tricky to get the poundage down and keep a good tiller without being able to draw the bow. I Forgot to mention to fill that crack with glue and clamp it till dry before you do the rap. Good luck.