Hä? You want to bait snipers into mines using a Kübel or do I get you all wrong? (which is entirely possible)
No, bait the M3.
SU:
Barton cheese: CE (initial) T1 Sniper M3 Con Sniper Sniper >>> Guards...
OKW:
-SP (initial)
-Volks
-(see what building he has inside his base) volks (why would you want another SP if he goes T1)
-Volks probably. At this point you can either know (with Truck) if he has gone M3-Sniper or both
-If he has gone for the M3+Flamer theres no minedetector for a long time. That´s why i´m saying put mines.
Or just go for the Panzershreck.
At this point is 1 SP + 3 Volks vs 1 CE + 1 Sniper + 1 M3 + Conscript
If another sniper is arriving that means you have 360mp for either unit you want.
What now:
-Panzerfusiliers? Or JLI/Falls behind retreat path
-1/2 Flak HT (which i think it´s get hardcounter by a kitting M3+Guards)
-Puma
-Luch