swamp76 - you mention Dryden, where I spent most of the 2003 fire season along with Sioux Lookout - when I wasn't flying I was driving guys and spares to Winnipeg and back, and I can assure you that in September I never wanted to see a helicopter again!
However, it didn't take long to recover. It was a very pleasant and relaxed trip back to Slave Lake, with a stop at Yorktown (in Saksatchewan), which is a nice little place. About a week later and several single malts everything was fine!
I have been in other industries where it's easy to burn out - I found one good remedy was to learn a new related skill, like yourself.
phil