Sandy, no we don't shave our dogs. I know many people do for the summer but I've heard both pros and cons regarding that issue. One of our goldens has much longer and thicker hair than the other but in the summer they both spend more time indoors in the air conditioning than outside in the heat.
One of my nephews used to shave his dog ... it wasn't a long haired dog but it had a really thick coat. They lived in south Florida and even though his dog spent most of the time inside, my nephew still felt that he needed to shave him during the summer months.
If we had a GR breeder nearby, we'd probably have a house full.

We actually talked about getting a 3rd but figured at our ages, 2 was probably enough to handle ... but ya never know!