Originally Posted by Az Gardener
The trimmer is all or none on the self propelled part unless you want to steer with one hand and hold that t handle with the other, so its much more difficult to control the speed.
You're entitled to your opinion, but I can't figure out what you're talking about. I never hold onto the T- handle until I'm ready to raise or lower the drive wheel, which is at the beginning and end of a row.
Most of the time I have my right hand on the left side of the handle as I walk along the left side of the machine. When I'm almost at the end of a row and it's about time to turn around, I grab the T-handle and let the mower keep propelling itself forward and let it pull the drive wheel lever back on its own -- then I flick it around and start the next row. Those Trimmers are extremely agile, well balanced, and maneuverable; it's like a hand tool that fits your hand real well.