Hoping your surgery will be successful and you'll heal quick! It's always distressing to have some issue that needs surgical intervention...
The human body is amazingly able to compensate though, so maybe it won't hurt your hunting. I'm partially deaf on the left side also, probably mostly due to wearing a radio earpiece for years only on that side. I didn't realize quite how much hearing I had lost until I got a new set of headphones. Now when I am having one of my "I hate the feeling of headphones squeezing my head" days, I use a mono earbud only on the right side while hunting. I haven't had any trouble using only one side, and the benefit is I can still hear my pinpointer even with my bum left side.
You'll figure it out