Wulfmann
CB has already dropped you a massive hint to get what you want,
You have two ways of reducing pin points
1. Set min ranges on your passives and actives so DD get blind spots on last approach
or
2. Adjust the turn rates of the DD = DD can no longer turn on a sixpence and subsequently have to drop their loads at random points near the players resulting in a more realsistic supression experiences if that is really what you want. If one class has wide turn rate and another has normal then you get mixtures. Each ship can be seperate.
Be careful though, when playing with this second option, I ended up pinned for
11 game hours and ended up out of commpressed air. Although it would indicate a method to get the ideal and close to history DC experiences, I simply do not want to be pinned under for 11+hours so will leave that for the guys who do.
Balance and much testing needs to be done but there is room for that method to get what you want within reason. It is just how realistic do you really want to go??
I tried an experiment on Gibralta mission and after 7 hours managed to look like I was getting out and free, the DD stopped searching and headed back to their patrol points, it was a shame i was in the way cos they picked me up again and I spent another 4 hours before I got bored and tired from concentrating too hard

.