So you are using Zen with side counts, less because you think it adds "power", but more because you believe it buys you cover over using Hi-Lo or vanilla Zen.
Here is why that logic is wrong. While I can't speak to your "local" casino specifically, most casinos now use computer analysis for their evaluations. And if your casino isn't it likely will sooner rather than later. Your assumption, seems to be that the computer default is set to Hi-Lo, so you need to move away from Hi-Lo or a count like Zen that is going to correlate closely with a Hi-Lo analysis.
But the computer evaluation is not set to Hi-lo. It is set to perfect value of each card. So the higher a count you use, the more side counts you use, is going to result in you correlating MORE with the computer not less. So cover is out the window, you are doing more harm than good.