RE: GSP or Lab
I also have a GSP and love hunting with him. I am in a considerably warmer climate though. A lab would probably fit your requirements better. A GSP can be an excellent water retriever but they stay warm by moving. A wet GSP trying to sit still in a duck blind gets too cold very quickly. Also they are not suited by temperament to stay still for long periods and can be very annoying to have in a blind. They know there's birds out there and they want to go find them NOW! I think hunting with a pointing dog is a lot of fun over and above just getting birds but it takes a lot of training to get the most out of a pointing dog. If you are still primarily a deer hunter you may not want to invest that much time. There is also the extreme danger of getting hooked on pointing dogs which I guarantee will cut into your deer hunting. LOL Craig, on this forum has a GSP and lives in your area. I don't believe he does much duck hunting though.
As stated above a wirehair may be a reasonable compromise and can be excellent pointers. They will not usually do as well as labs in the duck blind.