If I was you, I'd buy a boot replacement kit and install it on that axle before doing any U turns. It's a dirty job, but you effectively will have a new axle. A new axle that won't have to be replaced again in six months. That feeling of having done it yourself is worth more that the $250/hour shop fee that some places will charge.
I'm not you, I'm me. I can easily get more money, but it costs in time and every few minutes I notice that some of my time is gone and I can't get more. How much did I use writing this? ...wasted.
Anyway, here's some pictures:
YouTube has some good vids and Here's a link:
https://www.pelicanparts.com/techarticles/Boxster_Tech/41-TRANS-CV_Joint_-_Boots/41-TRANS-CV_Joint_-_Boots.htm
Here's another picture:
I literally do not want to sell you anything. If you force me to give you a price, it won't be cheap. ...but I'll probably be better than a random used one on eBay.