Simple and elegant emergency solution!
I would take this one step further and fashion about a 16-inch "mini-tiller" that screws into the elbow - like from a short section of galvanized pipe. Then, nest a smaller diameter shaft inside the 1.25" extension to create a simple telescoping setup. So, the whole rig would collapse down to 16" long, but give you a pretty strong 26" tiller when assembled.
Something like: