help with the five boxes

[RGOU812]

I'm just an average guitar player, been playing for years but always tend to stick to the same one or two scales when it comes to playing lead. Recently someone suggested learning the 'five boxes' which just about covers everything you need when playing blues and classic rock. I've learned the five patterns and was just wondering if any jemsite experts could throw a few tips my way about combining the five scales quickly or is it just a case of playing the things relentlessly until it becomes easy.

Cheers