Don't know if this helps, but you can find a list of kennels at the gundogsonline link below.
I know its not word of mouth but it will help find kennels in the area you requested. Go to the home page look under kennnels then select your state and breed.
http://www.gundogsonline.com/DirectoryMgr.aspOnce you've found the breeders in your area look at their web site in depth you can learn allot. Below ( ) is a link to a Breeding Kennel in Idaho. The site gives a good example of what the breeder thinks and how they do business. I don't know these folks but by researching these type sites you can learn what questions to ask the breeder in your area.
(
http://www.drahthaars.net/types.htm)
Not all breeders have a web site? I don't know if I would buy a car from a company that doesn't have a website to get support after you purchase their product?
Check this breeders site for GSP info:
(
http://coveyrun.net/pages/online_resources/online_resources_index.html)
Word of mouth is great as long as you ask the correct questions. Contact your local (
http://www.navhda.org/) Chapter (contact information below) and attend one of their Natural Ability test you'll find lots of new and old time owners that will be willing to help you.
NAVHDA Contact:
Joe Nagle
1894 22nd Ave Moline IL 61265
Phone 309-797-6695
Usually if the breeder has a waiting list for a common breed such as the GSP that may be a good sign if priced correctly. An honest reputable breeder is one of your best resources for picking the "quaility" puppy.