I have nothing against hovering or aerobats, but this last year at the Dayton show, I was NOT impressed by how they handled to whole issue. Yes, hovering over the runway when there are 4 other airplanes in the pattern should be stoppedand most of the aerobat pilot were courteous in this way. It's sudden unpredictable manuevers that cause problems. I was flying over a hovering aerobat when my spotter instructed me to turn left because he was starting a vertical climb out. just as I started turning, the aerobat pilot kicked in rudder and flew out knifedge missing my plane by no more than a foot or two. Later on during the fly-in, my engine died and My spotter called for a dead stick landing. The aerobats hovering over the runway never moved. I was on final approach engine out and was forced to dive at the ground to avoid hitting the hanging rudders. Nothing was said to the pilots from the CD or flightline cordinator. Events like this continued to happen all weekend. Therefore, alot of us warbird pilots decided that maybe it was time to forget about going to Dayton.