have to go with elkhorn here. i'm sure there are conditions that will allow you to leave the hide on an elk overnight, but i'd never take that chance. from what i've seen, they will sour where the neck and shoulders come together, real easy. a bull of any size oughta be split as soon as it is skinned, also. if you don't have a saw, take a knife and split the meat to the spine from the ribs up through the neck. lets the heat out. as far as gambrels, i've made several out of 3/4" sucker rod and #5 and #6 re-bar. seem to work ok. for an elk, if you're gonna be splitting them with a saw, make it fairly wide, so it really stretches out the hind legs. as you saw through the vertebrae, it keeps the meat pulled aside so it doesn't drag on the blade so much. i have an 051 stihl chainsaw that works great for that. has an oiler that can be shut off. that is if you don't particularly like the taste of valvoline 10-40.