Pardon me if I may say, not having played SH5 but spent many 'game years' in SH3/4 on 100% (full real - no icons/no charts/nudder/nothing), there's nothing to beat target course and speed by either.
1) running parallel to target course.
2) running 90Degs to target course.
with both of these methods, and some experience you need at most 2 readings to determine target course and speed. It's simple mental maths and no chart drawings.. etc.
