So me and my brother in law decided to have a yard sale and I found a dresser some one was trashing that was in perfect condition so I sold it for 10 bucks and my buddy was selling a pole spear so I grabbed that off him. I have never spear fished before but really want to learn. It has a double flapper tip I believe it is called. The whole tip is loose and kind of rocks around on the shaft I was wondering is it supposed to do that if not how can I fix it. Also the tip is dull is that supposed to be dull or should I sharpen it? I was spearing McDonald's cups today and got the aim down a little would like to practice on some thing more fish like tho before jumping in the water. Any one have any tips and tricks they wouldn't mind sharing with a newbie.