To hunt for SSRF WAF bypass, you can start by analyzing the target application for potential SSRF vulnerabilities. Look for user-controlled input that interacts with external resources. Test different protocols like HTTP, FTP, and file:// to see if the WAF allows SSRF attacks. Try variations in the URLs and observe WAF responses. Additionally, research bypass techniques specific to the WAF in use. Remember to perform these tests responsibly and with permission.