This is probably the easiest technique (use the HSI as a map).
The method I use (and used to teach before Jepp depicted holds on the Aussie charts) is as follows:
1. Find the
outbound track in the hold;
2. For a left hand pattern, use the left hand - and vice versa for a right. Align your index finger with your present
heading over the DG/HSI/EHSI etc. As a guide, use the "angle" between your index finger as 110 deg (parallel entry), and the "angle" between your index finger and your "bird" finger as the 70 deg (offset entry).
3. Look on the DG/HSI/EHSI etc as to
where the
outbound track of the hold is. If it's between your thumb and index finger it's a parallel entry. If the track falls between your index and bird fingers, it's an offset entry. Anywhere else is a direct entry.
Simple.
Once you get used to that method, you can substitute an imaginary line on the DG/HSI/EHSI using the cardinal points ticks. For left hand, use a straight line from 20 deg below the 270 deg tick through the centre of the DG/HSI/EHSI to 20 deg above the 090 deg tick. Use the reverse for a right hand pattern.
Progress in the hold: As a rough guide, I want the tail of the needle to be at about 30 deg off at the end of the outbound for a 1 min pattern, or 20 deg off for 2 mins (+/- drift allowance).
Hope this helps
