Jon welcomes Ron Sheppard of Perfect Post Hole in Toronto, a company that will come and use its power equipment to dig your fence or deck holes for you. If you want they will also install the posts.
A service like this is a perfect example of how to combine hiring a contractor for the hardest work that is best done with specialized equipment, and save your back, then do the rest of the building yourself.
Take a look at the picture -- backing a hole digger up to your fence is a lot easier than doing it yourself.