Is it the ship silhouettes and course barbs you want back? In the readme that nobody reads, Ducimus tells you how to make that happen. Actually that is the strength of Trigger Maru. Just like Beery, Ducimus tells you how to customize it to your liking.
But do me a favor. Live with TM's way of plotting for just one cruise. At the end, I bet you say it's WAY better than the old way. I believe it is the closest thing to a real plotting team, leaving plenty of room for careless mistakes but still giving you some check on your plot. I know it's intimidating and I know you just think you have to know which way those ships are pointing by inspection only, but trust me, it's better the Trigger Maru way, and way more exciting.
I was tracking one of the infamous 2 ship medium speed convoys once and made the mistake of pinging when they were 1000 yards away to do the WernerSobe sonar targeting trick.... The trick was on me.
A 30 knot charge from 1000 yards is as exciting as it gets.