Since one can only fly one ac at a time, hardly much need to 'memorise a wide range of SCAs'.....
Personally I find 'right 40 deg for 3 minutes and delay ETA by a minute' a lot easier than trying to work out (3x60/17) + (3x60/38) in my head.....
Even if SCA doesn't get you exactly back to track, you'll be close enought to recognise your position at the next visual fixpoint