Where I hunt in northern MI I can't get to where I hunt other than by foot and the cart I have isn't good in 95% of the area because of several hundred yards of swamp to get through where a cart won't go. I started in my early 60s quartering/boning them them out and backpacking them out just like we do deer and elk out in Wyoming and I'm still doing that at 67. If you have physical disabilities that prevent you from doing that, I guess you either need to find a younger hunting buddy that can help you or hunt where you can access a deer with a quad like RR mentioned. I'm not a quad guy myself, have never had or needed one, and hope I never do. They can be real handy though if used responsibly.