A good electric bike is expensive. The one thing going for them hunting is being quiet. I have seen where you can quietly go on a trail to get to your hunting location. Then with an attached trailer, you can haul out your deer using one.
There are 2-3 different kinds of ebikes. If you hunt with one, you need one that you can walk beside and it goes about 2mph while you are pulling a deer in the trailer. Walking beside it takes your load off so more power is used to pull the deer.
Some ebikes, less expensive ones 750 watts or less only assist you while peddling, like uphill. Some can pull all the time with variable speeds. Some are built for town use, some for off road.
I would like a fat tire ebike for hunting with the game trailer. However, it is $3-4,000 dollars. The good think is in some national forest areas they are allowed, where as a gasoline 4 wheeler or motorcycle is not. This is due to noise disturbing the animals or other people hunting or hiking. Range for a fat tire ebike is only 30-40 miles. That is a lot further than walking in or out, and trying to pack out game. Maximum speed is about 20 mph.