When using Burke Lake Park in NOVA, it is always prudent to look around for disc-golf participants before walking around the disc-golf course.
A big +1 to that. Most of the time, I'm actually on that trail as a disc golfer, but use it for walking sometimes. I've never had a problem with people walking while playing disc golf, and I've never had a problem with people playing disc golf while walking. I just wait till they're clear, and throw my plastic. But it's not a "dedicated" disc golf course trail. About 3/4 of the trail comprises the disc golf course, but it weaves off further into the woods in spots, then comes back onto the main disc golf trail. I'm A-OK with it being a dual-purpose trail.
Heck, if those airsoft players would have just chilled out for a minute while we were walking by, it would have never even come to calling the police because I didn't know it was illegal at first. I would have probably just waved and walked by.