Man, you're really over-thinking this. Stop inspecting it with a stereoscope (????!!!!) and fretting over repairs, and go fish the damned thing!!!! I can't imagine this rod was all that expensive in the first place, so unless it has some great sentimental value, it really shouldn't be that big an issue if the repair does happen to fail. That being said, if the repair was done well, and you don't do something stupid like slamming it in a car door or dropping it on a rock (like I'm prone to do), it should certainly hold up to a lifetime of use.

Regards,
Joe Martin
Salem, OR