Well, if by Crochenit TM patterns you mean patterns for a double ended crochet hook, then you can also look for patterns fro Cro-Hook, Crochet-on-the-double, and may be others. I found another thread on KH about Afghan hooks and knit-crochet books. It has links for patterns too.
Wrights: Dish towel
Dish Towel Topper
The typical stitch used with a double crochet hook is the tunisian stitch or twisted tunisian stitch. I have previously found a website that offered other stitch instructions for purchase :nails: . Thus I have no details about these other stitches.
(Cro-Hook is a trademark of Wrights)
Okay, that's most of what I know about it. Good luck Crossed Fingers with your search!