Elf On A Shelf
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I have to say, I do most of my XC schooling on hacks - popping logs, walls and streams, going up and down steep hills in various paces. Must be hard to do if you never hack out, I guess you'd only get the experience of farm rides and XC schooling fields.
You'd be hard pushed to find anywhere within a 10mile radius of here to get off of tarmac let along grass, streams, logs and the likes!