Is there someone with a simple method for diversions?
Look at map, guess heading, sanity check by looking at ground features, correct as necessary as you go along. Need an ETA? My thumb is 6nm wide. Or tune in DME at destination and read the ETA from the screen. Guess a wind correction, if it's strong enough to worry about - for a PPL test, as opposed to a real life diversion, you'll have flown long enough before the diversion to have sussed out the wind (you've drawn the forecast wind arrow and written the speed on your map, haven't you).
Or you could use the GPS, if you've bothered to switch it on.
Faff around with CRP-1 and rulers and pens and arithmetic in the air? No ta, I'd rather do my spiral dive recoveries when I'm expecting them. Besides, there's too many gliders around to spend that much time not looking out the window.