Thanks for the replies,
Looks like with my a/c, no rudder trim or autopilot I better continue what I have always done.
Pick a easy landmark, mark the plog, scan for safety, flyaway from it and back to it. So much for the circle.
The square seems a good idea but I would have to turn four times, only twice for a ovel.
Even better I think would be to be more sure of my position, thus concentrating on the flying and not the map. But, Im sure all of us gets "temp unsure of position" from time to time...
As for spiral dives, never did like them.
Cheers,