I thought of this idea. I'm sure it isn't new, but I thought I'd ask you guys what you think.
I build a rattle from a small, cylinderical glass vile. I but some small ball bearings in it. Then I put it on 3ft wood dowel with electrical ties. The idea is to use it when fishing with tip ups. I thought you could just go hole to hole every so often insert the rattle down the hole next to the tip up and shake it to encourage curiosity and bite.
What do you think?