Hunting New Land

I'm looking for some others ideas here. I just purchased some new land in Missouri for hunting purposes only. On it there is only a small 10x14 "cabin". I've hunted for 17 years but have always had a shop to bring my deer into and do my work in there and leave them in there over night. This land doesn't have that luxury. I want to know what other people recommend I do on my new land to keep bears and other wildlife getting my fresh kill. It is a 10 hour drive to home so when I go it will be for four days or more at a time. Do I need to build a barn/workshop?

Thanks in advance!!!