Goodly morning all...

That would be a good one Larry...

On Military and Commercial Aircraft the installation of Ski's, Floats, Amphibious Floats, Static Lines for parachutists and many other things must be done by a qualified peson and a signed, dated entry into the Aircraft Log Book made.
I have installed skis on several of my own bugsmashers many times and dated a signed entry into the Aircraft Log Book but with Transport Canada Rules and Regulations now, I am not sure if that would even be possible.
I think everything must be done by a qualified person which is good in many ways but adds to the cost of General Aviation.
A little off topic maybe but here in most automobile garages they will not let you stand by your vehicle and watch them change the oil, rotate the tires or do mechanical repairs.
You have to sit in a waiting room, Insurance Regulations they say is the reason. :P
Cheers...Happy Landings...Doug