I guess it depends on how big the patch of reef was. Some spots are only big enough for one boat to fish. If I am anchored up and have a good burley trail going I get pretty pissed when someone comes along and runs up the burley trail, or worse anchors 50m away in the middle of my burley trail. Floatlining unweighted baits back down the trail can see the baits 50m or even 100m away from the boat. All depends on the circumstances and I wasn't there.
Jeremy