Are you sure, by the time you've set up your hoist, winched up the deer, gralloched it, swung it into the pickup, taken down your hoist, put hoist away, you could have done a ground gralloch and away and shot another!
I maybe old fashioned but I've never understood the reason for a suspended gralloch. Probably 95% of reds shot will be floor gralloched so why the push to do the smaller species?