No pee is pee they don't know the difference or can't tell human pee from, all the hundreds of dif animals that pee.

But why don't you just make a ground blind or find a place to hide by the trail down farther. Just find a place to blend in about 30 yards away from the trail so you can get away with more movement and snipe one. Sounds like that's your only option. If they have moved already because of human scent don't make them move again because of it or they will become really causious and might just leave the area all together.