Yes, the wing engine. Little Evinrude 4.
It's a sailboat engine, it has the throttle on top of the case.
With the wing down and running straight ahead I can steer with the main engine ( while it's not running ) lock to lock.
The wing will go about 120 degrees left to right. It's designed to spin 360 as there's no reverse but it's asking a bit much on a busy SR4 transom.
It will take us up to 6 knots with the main lifted. 4 with it dragging.
When on the trailer it sleeps on a fender between left tube and console.