If your talking 5 to 10 miles in those GMU's it'll be behind a gate mostly, then likely hunt old spurs off the mainline.
So you do have options. I go in in the Clearwater with a mountain bike and a cart to tow plus a pack frame. Stash the cart and bike and hunt, hunt, hunt! I use that bike to get out at night but keep the cart in till I need it or the season is over and it comes out empty.
Check with your partners to see how much is on actual dirt roads. If you went off a dirt road in the 615 5 to 10 miles youd never want to pack an elk back out!
