Broken pole spear options

So I have a cheap pole spear that I use when I shoot mullet and sheepshead by my seawall. I accidently shot something and the threaded part broke off and is stuck in my tip which is bent. I was thinking about buying a arrow head and trying to weld, sotter, or glue it on. Would that work, are there any other options, or should I just keep the band and buy a new pole? Thanks in advance for any help!