Diane, how fast is "fast enough"?
I wouldn't call your way "wrong", by the way, I just found that being more assertive about lane position caused motorists to treat me with more respect, or at least with more space. I sure don't miss those close calls where they're not sure whether they can squeeze in or not, and some try to squeeze in anyway.
Hugging the edge is inviting them to squeeze into the lane next to me. But as far as I'm concerned, they're not welcome there, so why invite them?