Thanks for your reply. I am familiar with your TMA guide, but I think I will reread it. (recently started playing SC and SC/SCXIIc/SCU seriously these days)
I am still working on learning SC tactics. There is a big difference between this and WWII subsims. I recently realized that as soon as you have been able to ID an enemy sub (whether at war or peace) do not generate anymore closure. WWII subsims due to dumb weapons are very big on closing. Here it seems detection/separation is the golden rule.
I don't know why, but I had the impression that there had been a whole series of "TMA exercises for the reader" posted here or at Battlefront. It shows that I clearly need to be doing more manual TMA as my age is probably beginning to dull my mental faculties.