I tell Mr. Big where we're going but I often let him pick how to get there. On yesterday's cross country ride (no trails) we were just out exploring--in quite a bit of snow, in some pretty hilly country. I let him know what hill, valley, saddle, etc., I wanted to get to but let him pick the way that he seemed to think gave the best footing in the snow. Well, within reason--he had to stay more or less on course!
The exceptions were times when I wanted to look at something in particular. Like, looking for rabbit sign for example (didn't find any, darn it all). Then he had to go where I wanted, how I wanted to get there.
And, for a bit in the middle of the ride, I was making him walk around bushes on the side he obviously didn't pick--just to make sure he knows I'm the boss and, if I say so, he WILL go where I want him to go!
He got all bent about something at one point and I ended up pulling him into a tight spin one way, then the other, then back again. Then I said "We ARE going where I say!" and after that he was a lot better. Guess he just needed a strong reminder of who was boss!