I have used the Deer-Sleigher and it helped some but wouldn't use it again.If you are anything like me,I think you would get tired of packing something like that around,still hunting 10,20 or more times for each time you actually used it.
I have a plastic sled,app 6' long that I leave in the truck.It works real well for getting antelope back to the truck on semi-level ground.Sleds can be worthless in hilly country and if you have to drag over rocks,even small stuff,it really increases the drag.
If the ground is very rough at all,a game cart is better but hills can still be a problem and it too needs to stay in the truck.
Anything killed back in the hills,I skin,quarter and pack out.That saves me dragging garbage home that I will just have to haul away after processing.
I normally keep the sled,game cart and packframe in the truck during season and use the best suited,if the time ever comes.I don't like carrying something 100 times on the chance I may use it once.