writing in a southern accent

I'm submitting a story for the Traver Award today and I've been debating whether to write in a southern accent for one of the characters or not. I decided against it. But here is an excert before I changed it back to standard spelling.

Is this obnoxious? Some of my favorite writes do it (Faulkner, Thomas Wolfe, Denis Johnson) and I love accents. I think they add a lot to a character. But I think for a contest for a mainstream fishing magazine it may hurt.

“Ok. All rot. Fon. I was jus’ excited about gettin’ to fish fo some while trout on a famous reeva. I suppose I’m a little ahead of myself. Thanks for the pointers I gayess.”

He turned and began to walk away. I made two false casts and dropped the fly at the head of the run about five feet in front of a previous rise and mended the line. A small fish rose and the man heard the splashing and turned around.

“I stood here for two hours and didn’t catch a thing. Now you come up and WAYAM! on your first cayist!”

................

“Yeah, pretty crowded up there by the hatchery. That’s why I came down hee err, try an’ get away from ‘um.”

“Then I came wading right into your hole. Sorry about that.”

“That’s all rot. I wasn’t catchin’ anything anyway. You were catchin’ ‘em pretty good though.”

“Yeah, I was doing ok. You really have to use tiny flies and small tippet. These fish are super selective.”

“I gayess so.”