I stopped using "no map contacts" with TMO because of the lack of radar contact plots. I didn't think about checking the radar screens themselves once a contact was reported, and I'm not sure if you'd get a good bearing/range with them (don't have much experience there yet).
If you can get decent range and bearing off those screens then you can manually mark a rough position, time for 3 minutes and remark, then measure course and speed from there as per most of the manual targeting tutorials... It would be a bit tougher with sonar, but there's the risk of checking out a contact only to find out it's a warship!
Hmm maybe I'll turn "no map contacts" back on
