I put this up a couple months ago and people said it was a great idea and I should take the pic down and look into getting a patent on it, but I dont have the several thousand dollars for a patent lawyer and all that. So here it is again. It is really useful and makes it a lot easier to shoot your targets at different differences when sighting in your rifle by yourself, because you can just move your truck up and down the range. I was able to mount my spotting scope to it as well. There could be some improvements but it gets the job done.
Its not that hard to make if you know how to work with steel and wood.