Honestly, the chasing phase of the rut is probably the most difficult time to get a shot. The problem is that they are usually doing just that, chasing! I personally like to stand as much as possible while I'm hunting the rut. But do have to sit down once in a while to give my legs a break.

When they're running after a doe that won't stand still, its tough. You either get lucky and she stops or she doesn't. One thing you might try is concentrate on stopping the doe somehow. A grunt tube, a bleat, something like that. If you can get her to stop and see where the noise is coming from, the buck most likely will do the same. Of course, you also run the risk of being busted. Of course, what usually happens with me is the doe will stop, but the buck will keep pushing her.

It's really a 50/50 deal. You either get lucky or you don't.