I would definitely suggest a kiddie pool. I have a kiddie pool for my dogs, and they love it. Grooming the dog regularly helps as well. Although with some dogs I've heard the coat comes in thicker and wavier, I don't really see that as a problem if you're planning on continuing to clip the dog.
I haven't noticed any change in Mudflap's coat since I started clipping her. I don't completely shave her, I just thin it out and shorten it a lot. It really seems to keep her from getting so hot, and she doesn't look dumb either. When I'm done clipping her, her coat is just a little longer and thicker than that of a short-coated Border Collie. With the clipping, the kiddie pool, and plenty of water and shade, she doesn't burn up in these hot Texas summers. If it's unbearably hot, I keep her inside, but I let her out as much as possible because she enjoys it. =)