You know, nuke and eq can be easly prevented if you leave you worms high enough and stay in a crater.
Being shitlessly scared to death and not even trying to collect the crates, even if your oponnent might attack you, is like giving up on something because it may not work. And eventually, with my experience, if you collected enough crates, you will be well prepared for sd. So stop blocking the worms (well, now, with 7 girders, it's kinda reduced, I remember me and Uber while being into deep shit blocked like mad and the other guys always went crazy
) and use the power of F8.
One more thing, sure there's luck involved in t17, but top t17 players magically can reduce it. ; O Damn, there must be something in it!