David,
I know what it is to do heavy physical work. I have done hardwood flooring installation and sanding for the past 22 years. Throw in 2 major cancer surgeries (11 years ago) and recently with lower back surgery (July 2005). I am 47 and 6'5". I keep looking for an employee who is about 2'11". I have done the 2-3 job at a time thing and it is no fun. But you do what you must. I am presently pursuing other avenues that will allow me to get out of the flooring business and save the body before it wears out. Good Luck back at the golf course. We had a business associate back in WA that had a 9 hole course. He was 86 when he gave it up!

Best Wishes,
Tim