I've got two of those in the back yard and have been eyeballing them for about a year. I need an electrician to help me with limit switches to change direction at the end of the track and I think it would work well. They come with a forward and reverse gear but it you remove one screw they have two forward gears including a higher gear. If they'll carry a 50 lb kid they should work well for a deer. Maybe add a larger battery.here is an interesting idea for you, powerwheels car, find someone whose kid has out grown theirs, they can even be hotroded to run faster, put the forward and reverse on a control box with a cable to the unit, and you can run it forward and reverse and adjust speeds if you get creative with it, saw one like this at a local shoot, it was fun to shoot at, they had a wooden track that it ran on so no steering issue and had a plywood wall on each side that it ran behind so you couldn't wait till it stopped to shoot it.