Construct yourself a wind star during your pre flight planning. Draw the lines to make 8 points of the compass (N, NE, E, SE etc) and then write down the drift and the ground speed for each direction. During a diversion you can easily just look down and see the drift you would expect. For headings that are in between these eight points, then go for a drift and ground speed between the values you have written down.
PPPPPP
I loved practising diversions during my PPL training!