I need someone with actual experience to answer some questions:

First what implement is the best that I can buy? I heard to buy a co2 powered spear instead of a band powered one?

Second, where should I go? I live on the coast.. there is a sound side I can go on, but I worry about boats and jet skis. What is a smart way to get away from them? I would imagine staying close to shore is the way to go?

What are some safety tips you can give me? One thing that comes to mind, where ever I go I plan on being away from swimmers, but that would be my worst nightmare, to accidentally spear a swimmer that was in the area that I didn’t see or something like that.

How dangerous are shark to snorkelers (I don’t want to scuba just yet) and what type of knife is used for a diver as a just-in-case?

Can I spear shark or would this be suicidal?

Lastly I have an ocean going 1 man kayak. Am I being rediculous to think that I could use a small anchor to keep the kayak in place while I spear fish near it on a calm day?