I agree with QDM
As a mil type most ccts are based on 'gates'. A 300 ft gate with wings level and a sensible G/S means a gate at 90 deg to go at a height of your start height, minus 300 ft, divide by 2 then add to 300ft..adjust at 90 deg if not in the right place. Of course if someone has extended downwind.....
Oval ccts are certainly easier to fly, they ensure you remain visual with the runway at all times and therefore all other players. It also means that a route plan is not required for a ccts bash. Mind you, we fly downwind at 220 kts.
Good luck and keep looking out.
