First the good news, I had an IH and still did residential construction and all of my hunts for years with no issues at all, I was just aware and protected it, so if it's not bad you should be fine.
The bad news, an 80 lb pack and a little stumble and you could rip it open to where the intestine is sticking out to where it could strangulate, not good and very dangerous!!
You are in a predicament! you probably will never get it scheduled, done and healed for this years elk hunt, only you can make the choice to go on your backpack hunt.
I had an IH about twelve years ago and had them only stitch it up with no mesh and was good to go, I thought! Last year the other side herniated so I went in to get it checked out to start the process of getting scheduled, much to my surprise the Doc said the old hernia was starting to come back as well and then he topped it off by saying I also had an umbilical hernia as well! March 3rd I had a triple hernia surgery!!! My T2 was delivered on march 10th all I could do was look at it!!
Like tstowater I was also back to doing many things in 4 weeks but I was not to do any crunches or sit up type exercises until 6 weeks time.
I am curious tstowater did your stomach scar bother you for a long time after? like when you hiked with a pack? my scar is right where the darn pack buckle can rub it and only now after5 months is it getting to be not so sensitive.
I would suggest getting your IH done Laproscopic and with mesh for sure! and make sure you talk with the surgeon and tell him to please be extremely careful with the Obturater nerve, my left testy hurt for 6 wks, NOT GOOD!! All better now but I have read some horror stories!