Once you get used to it, you will find that getting under there is no big deal. As for the hush panel, from the front of the car reach underneath with a 1/4" drive ratchet, a short extension and the socket. Pull the back screws first and then the front ones. Once the panel is out of the way, then get under far enough to pull the plug.
Also get in the habit of looking around and don't be afraid to push and pull on things to see what might be loose.
Also don't forget to look at the hush panel to see what might have been leaking on it.
Have a great day,