I chained 220 with a 7mm hook (I always, always use a hook two sizes up for a foundation chain when I'm making a scarf - it stops that annoying curve) and then, using a 6mm hook, simply worked half trebles (half doubles US) in the back loops.
Gentleman's Scarf - free crochet pattern plus video from YARNutopia By Nadia Fuad
Super fast scaf made using Granite Stitch (crochet)
The Every Man Scarf, free crochet pattern from Fiber Flux with video tutorial
Free Knitting Pattern: Extra Warm Men’s Scarf (Women can definitely wear it!) « Cotton and Cloud
I was looking for a crocheted scarf pattern that would be suitable for men. After several failed attempts with patterns that were too thick and chunky-looking, I came across the solution: use a lar...
Crochet to do list
Men's Scarf By Suzanne Resaul - Free Crochet Pattern - (ravelry)
Ten Free Crochet Patterns for Men
Ribbed hat crochet pattern More
Pink Milk: Show And Tell - men's crocheted ribbed scarf (includes how-to).