BOAC:
You first need to eliminate the 'Arizona/John Wayne' state of mind that TERPS circling is for real men.only and 'if you cannot stand the heat'..............
The NTSB and the FAA reached a conculsion sort of like that when an American Airlines 707 crashed on the downwind leg of a circle to land at a relatively flatland airport, KCVG. (1965 or thereabouts.)
And, within a few years the FAA prohitbited circle to land for commercial operations unless specific training is provided.