Bate Pole - Floating cup.

thingiverse

This is a floating cup for a bait pole. The idea is you drill out the end to whatever size the end of your pole is and put a bolt through it so it can be removed for transport. In Cura create the handle part (the bit that fixes to the pole) with 100% infill to make it strong and so that it can be drilled and fixed to the pole. The rest of it use what ever infill you like as this is what makes it buoyant. This is a quick knock up (version 1) and has some flaws but should be usable. Make the .stl file editable and fix yourself if you want or wait for version 2. Attachment is 50mm long x 40mm wide x 40mm tall.