That's a really nice setup you have there, Chuck.
Sadly my land is fairly flat. It does grade up slightly in the direction I'm shooting but it's so slight and consistent that you can't really tell. I'm not so sure there's that much dirt to scrape, and the dozer guy said as much when we were mapping out where to clear, but you guys bring up a good point that there's such a small (time) investment to give it a shot vs trucking dirt in that it's gotta be worth trying.
I've been wrestling with railroad ties vs tires, and as I don't really care about appearance it probably comes down to what's available. With the tires I can pretty much do the work myself (slowly), but I have to be able to find quite a few. I did some quick math showing that for 10' wide and 6' tall, and two tires deep I need over 120 tires (!). That's like a half dozen loads by pickup, and I end up with a relatively small backstop at the end of the day. Could probably get away with single deep if I can fill in the narrow spots somehow....