My only advice is - get some more friends to help! Seriously, I haven't found any great shortcuts when processing deer meat - it takes me a long time too. But if you have 3-4 people working on it, you can get it finished pretty fast. I'm pretty picky about my meat - I take the time to get all the tendons, fat, connective tissue, etc. cut out- that's what takes the longest. Usually it's a family/hunting buddy effort all working together if we want to do it pretty fast.