Go get a cheapy 12 volt winch at Wal-Mart. Either get a 12 volt battery or run cable from a 12 volt source to the bed of your truck. Run a chain or cable across the front of the bed to hook the winch to. Hook up ele. supply. Hook up deer and start winching into bed of truck. Might want to use a ramp of some sort. I don't use a ramp but my truck is just an old beater. Loaded more than a few deer this way by myself.
Sorry for the rambling on my first post. Nice web site.