In Michigan, I am familiar with many of the trainers and farms in the network and very few are National winners. Most are fairly "small time trainers" trying to get their name out there
Here are some results from the mentor network to give you an example
Approximate Distance from You: 27 miles
Years of experience with Arabians: More than 10 years
Areas of Specialty: - Arabian community (Local clubs and shows, etc.), Regional Activities (Trail riding, Open Shows, Fairs, etc.), Veterinary, 
Training, Instruction, Pedigrees, Sport Horse/ Hunter Pleasure, General, Amateur, Open Shows, All-Arabian Shows, Hunter/Jumper/Equitation, Dressage, Sport Horse In Hand, all Sport Horse Classes, What to look for/what to look out for, Pre-purchase evaluation, Evaluating Arabian conformation and type,
Farm Name: Mose Arabians
Approximate Distance from You: 37 miles
Years of experience with Arabians: More than 10 years
Areas of Specialty: - Attributes and history of the Arabian horse, Arabian community (Local clubs and shows, etc.), Regional Activities (Trail riding, Open Shows, Fairs, etc.), Breeding/Foaling, Instruction, Healthcare and Nutrition, Pedigrees, General, Amateur, Open Shows, All-Arabian Shows, Halter and Showmanship, English Classes, Western Classes, Hunter/Jumper/Equitation, Dressage, Sporthorse, What to look for/what to look out for, Pre-purchase evaluation, Evaluating Arabian conformation and type, Ride & Tie, Pyramid Society,
Teri A. Cox - Frankenmuth, MI United States
Contact by Phone: 517-652-8761
Contact by Email: 
[email protected]
Farm Name: Marigold Stable Inc.
Approximate Distance from You: 51 miles
Years of experience with Arabians: More than 10 years
Areas of Specialty: - Attributes and history of the Arabian horse, Arabian community (Local clubs and shows, etc.), Regional Activities (Trail riding, Open Shows, Fairs, etc.), Veterinary, Breeding/Foaling, 
Training, Instruction, Healthcare and Nutrition, Pedigrees, General, Amateur, Open Shows, All-Arabian Shows, English Classes, Western Classes, Hunter/Jumper/Equitation, Dressage, FEI Level Dressage, What to look for/what to look out for, Pre-purchase evaluation, Evaluating Arabian conformation and type, Judging suitability for Sport Horse performance, Competitive Trail, 4-H, Pony Clubs, Teach horses from 4 yrs up.,
Here's my results from my zip code for those interested. You can put in any zip code obviously.
http://www.arabianhorses.org/activities/MentorPrograms/MentorLocatorResults.asp
These programs are set up for amateurs, novices and people new to the Arabian breed. I know what the big trainers charge for board and training and most people could not afford it or would not pay for it. None of the big name trainers in Michigan like Mike and Terri Budd, Keith Krichke, Al Gruppen and the Rookers are on there. Tim Shea is for some reason. 
		
		
	
	
It certainly won't hurt for the OP to look into it.