Experiment #7 Results:

Location: A shack I built at the edge of the woods just outside town.
Decoy: #4 with new Attire and Mask
Symbols:
Standard Operator Sign: Effective
The Ichthus-Operator Signs:
My Design: Semi-Effective, it held the construct back for a few minutes It shredded the papers with it drawn on.
Two out of Jakob's Three designs were met with similar results. The one you picked for you avatar is functioning as a ward. In fact, I'm typing this in real time and it still hasn't worn off. I can tell the construct is not happy with the design, though. Its tendrils twitch in anticipation of the kill at them. Though I'm going to have to give up watching for meal at some point, I will try to keep track of out long it's going to last. The construct showed up at about eleven at last. I'm hoping for the symbol to hold up that long.
Another variant in the creature's behavior is that it's staying farther back from the effective Ichthus-Operator than it ever did with the ordinary Operator signs.
Then after that, there are still the ordinary operator signs. I wonder how long they will be effective since they haven't had a run at holding it back yet, but have been up as long as the Ichthus-Operators. That goes for the Decoy as well.