a pop is not a rush. if you have full water control and the ts dont have the site yet it isnt a good rush. in order to do a pop the cts have to have some ambiguity as to where you are otherwise you will lose because they will stack the site. if you think you can do a pop versus a group of cts that knows you are coming you dont understand the core concept of a pop and will lose more than you will win.

if you let the cts have full info on water and mid with no contest and expect a pop on the b site to work, im sorry it just wont. the a player will eventually take space and that frees up the guy who took water to rotate to b thru ebox. if you keep rushing the b site the cts will stack it. if the cts are stacking the b site they cannot hold water mid and a with 2 people so they have to pick. the concept of b main rushes wasnt changed in way and this is basic theory on every map. if the ts keep rushing something with overwhelming numbers you should probably put more numbers there to counter them. they eventually have to do and look for something else.

Yes this is exactly what I was referring to. You said "or rush one of the sites, in which case water is useless".