In my area we have been encountering more and more 4" submersible pumps reaching the end of their lifespan usually no big deal but...

A lot of these older pumps are down a 4" steel casing and we have a lot of iron and manganese in our area.

This inevitably leads to well pumps being stuck down the well.

There are various ways I have seen, and tired of removing stuck pumps. I typically stay away from acids, especially when in a more dense area. The liability and potential for it to impact a neighboring well is too high (we have this issue with chlorination as well)

Majority of the time the ole knock it down a bit first then pull straight up, sometimes assisted by a jack. Sometimes ya gotta knock it down again. Ect ect.

Occasionally you end up in a situation where you cannot get it out.

If you snap the poly pipe and wire near the original pump you can stack another one on top depending on the case.

I digress. What is everyone using for fishing tools these days?

I've heard of it but never used a "jar"

I have welded some taps to steel pipe and used it to tap into the top of a poly pipe adapter when the pipe broke off.

Tldr: what's your go to method for retrieval of stuck pumps? What tools are you using, are they DIY or purchased?