Brian, this program is excellent! Even if you dont make any further changes to it, it is a real achievement.
As a HFT'r, I would like to offer some suggestions.
Hft mode... ie
Add elevation into the mix.
Target sizes at hft ranges, which fit within current ukahft rules.
The ability to 'call' a target that should have gone down! (or perhaps not, lets scrub that last suggestion)