Finish off HMS Prince of Whales and head back to port WITH DKM Prinz Eugen, not alone.
The military term of that is to strengthen a sure loss. As if it was not enough to lose Bismarck, you would make sure to lose Prinz Eugen too ? I know you are anti Nazi and all, but the question was to make a better result, not a worse. Letting Prinz Eugen go was a correct decision, save the ship to fight another day. Trying to catch up Prince of Whales whit your damaged ship and with no rudder would be borderline ridiculous. Your only rational decision would be to head back to port, but don’t tell Churchill about it, like Lutjens did. Keep the radio silence, and you just may have a fighting change.