My nephew has a firefighting Dad and wanted to have his boots.
For stitch gauge, this is worked in rounds. I suggest making the sole and measuring that. I am a fairly relaxed crocheter, that may affect the size crochet hook you will be using.
I am a pattern designer and have designed for several companies. I have been published in catalogs, magazines and hard copy books.
I have one coming out in the spring of 2014, Baby Brights from JBMedia group. I will be adding to my pattern section of my shop shortly after Christmas.