Secondly, I get a lot of "my aircraft is fast so I have to fly bigger circuits". Not true in most SEPs and many Twin pistons unless you insist on flying the circuit at cruise speed. The arrow is very comfortable clean at 90mph or 80Kt (whichever you use on your ASI) which is only 2 knots faster than most C150s downwind.
I do find this slightly irritating...I was behind a Baron 58 in the circuit today and he flew way downwind. But there is very little one can do except follow them.