Re: PVC outboard handle extention?
I made one out of pvc very similar to what Drowned Rat described for a '63 Evinrude Sportwin 10hp. The goal was to operate the 14' boat from the middle seat when out by myself. For the handle part, I just scuffed up the pvc so you could get a grip. I also added a kill switch plug and switch, and a extension rope so you could start it from mid-position.
What I found was, as Lone Duck describes, It takes a much wider swing to turn the boat. When going straight ahead the handle is near the port side. Turning to starboard was the issue. That is why the commercial extensions have a u-joint in them. Steelspike idea might help solve this, depending on where the handle goes at rest. Also, the pvc had to be large enough diameter to fit over handle which makes for a rather large grip. But this could be necked down, but didn't make it to that stage.
Anyway, after making and testing, it didn't marry well for my primary use, fishing in shallow water. I still had to jump to the back of the boat to raise motor to clear bottom or when starting to put in neutral.
What did work, was making a gas tank extension hose and putting it in the bow.