That's where my problem lies. Typically if I screw one up I'll instantly restart. If I'm really flying, I can fill the matrix up to the point of almost maxing out in around 15 seconds, then I just combo the crap out of it and just do whatever. I always reserve the first line and keep it around until it's needed.
Like I said, video and photos of that will come soon. Just, at the moment I'm busy taking care of stuff I need to do.