RE: Fixing your dog
He will be fine for sure.
I also have a Springer. He's a 6 yr old intact male that has sired one litter of 6.
My 2 buddies have 3 of the males andall have been fixed and they continue to hunt well. Never noticed any changes in their hiunting abilities.
Plus there isless to be concerned when they come in contact with another intact male. Something I always try to avoid when in the field.
My male is a big Springer - almost 60 pounds and is a dominate male who never backs down. He is also a teriffic meat hunter, absolutely relentless,that lives to be in the field but I do have to be aware that he is intact and will react like other intact males.
One other note: If you have no desire to mate your Springer, I would have him fixed.
Good Luck.