Fishing rod, connecting rod and bobber?

I'm trying to add fishing into the game I'm working on (vr) and I'm trying to attach the bobber to the pole with a configurable joint so that it can swing freely as well as have the option to reel in our cast up to a set maximum distance. Only issue is so far it does not really work and I cannot maintain any set distance.

So my question is how would I use the joint to achieve it, or if there is another solution I could follow to achieve this result?