Actually, I elevated the grinder to fit the Wolverine jig under the center of the wheel. The wheel spins downward on the accessible end.
To be honest, I haven't used it with the water trough. It's a slow turning wheel (only 160rpm, 180 on newer ones) and I have had any heat issues. I usually hone my gouges after sharpening, with a wet (for slurry) piece of 320-400 rolled into a curve.
As for the water trough, I think you could mount the grinder even higher to clear trough and still be fine. Since we're talking about a round wheel, you would just slide the jig in or out the get the same angle, to make up for higher or lower, right?
For what it worth, I also freehand flat chisels and such on the flat side of the wheel.
I haven't gotten real anal about sharpening, yet, and I'm not an expert on the theory by any means. But I got pretty sharp for a long time freehanding everything on a fast grinder and Arkansas Stones. When I went to the Wolverine jig and the HF slow wheel, it was like using brand new turning tools every time.