I prefer the TillerClutch because of the very fast, simply-made adjustments that can be done with one hand. I tried the home-made rigs. They worked fine in light air when I had the leisure to futz with it until it was just right and I wanted the boat to sail while I ate a sandwich and a beer while sitting close to the tiller. But they failed me when things were more critical and I needed to make small adjustments in a dynamic situation (choppy, gusty, sail set adjusments, etc.).
"Also worked for holding course while using the outboard allowing you to put things in order on returning to marina." This works for me using the rudder tiller and locking the outboard steering to straight-ahead, but it reduces the effectiveness of the rudder. I've read some descriptions of connecting the motor to the rudder/tiller so that the two will move in tandem. I might try doing that to my boat someday when I have more time to rig it up. In other words: highly unlikely.