One way to write good code quickly is to not have to write it. Some of my strategies are:

1. import modules and use their code.
2. have a well-stocked/sorted library of code snippets, useful subroutines, and templates.
3. use a good editor and configure lots of perl syntax shortcuts.

My feelings of being somewhat "fast enough" coincided with gaining a level of fluency in the language that allows some thinking according to it's rules leading to activities like coding working programs with pen and paper. As with any learned skill you have to do a lot of slow and thoughtful work to gain the skills required for competent and speedy execution.