The proper way to skin a cat

ARGO: I originally wanted to put this in the tanks section however the subject asks about ALL vehicles Russian or German so I think it is best placed here. I am not asking this question for myself but for tips from all of you Tanks, SPGs, TDs, you guys are the pros and I will bet there are many way to "skin a cat" so to say. Now remember this question is for BOTH Tiger and Tiger II so I am guessing there are different ways to knock each one out that will not work on the other.
BTW, Has anyone noticed that after the patch HE rounds don't work so hot on Tiger tanks anymore and that gold rounds are a toss up with Tiger IIs?