i think these tactics are good. For maps like Stalingrad, Krasnyi, and Kaukasus, just avoiding areas where they are commonly thrown is easy to do. However, on Basovka I think it's a bit harder. On that maps, the attacking team usually spams nades into the trenches. The only real way to avoid them is by staying out of the trenches.....but that's when snipers or mg's kill you. I think the best solution would be to make it possible for people to throw the grenades back. I know there has already been threads on this, and there are many complications to re-tossing a nade, but it might be a good way to counter spamming.