I'll send you a linkie RR for the Matsu test, and you can see and experience 4 DD on one Fleet Boat, nothing to hide under or near, other than the ocean blue...
didn't work too well for me... But it is almost as if your best chance of surviving ~some~ of the attacks on a Convoy with multiple DD is to just bull right in and then hide close by.
- But it's very tough to tell from a distance whether you've got a "competent" crew, or an "elite" crew on the DD coming at you... When you're in a hurry though for more CTD testing, you do some crazy things sometimes... I haven't tried that Submarine on the surface at high noon trick lately though...