I have a Hawk Crawler, 4 wheels on 2 axles that pivot, it will go over trees, rocks, etc. quite easily. It will handle a moose quarter, so no problem with a whole deer. The first time I used it I was alone and hauled out my deer with ease. I have a harness too, but there is no way I am dragging out a deer 1km by myself.
That mesh is more than durable enough, I'll be surprised if it doesn't last 20 years.
When there is snow, I just use a toboggan which I keep stashed in the forest.
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