In the former legouni forum yhnmko1 posted instructions for creating a brick water illusion behavior. LU had a few glitches with this behavior, but it seems to be pretty stable now since I ask for a bug fix (not suggesting they fixed it for me, just that it started working well right after).
Let me say I think this discovery is shear genius. Props to Yhnmko1 for sharing this. It entails simultaneously smashing and building the water bricks to make them unstable to stand on.
Screen shot of what this does:

1) You must build your water model separate from the container it's in or you'll pass through the container as well. It's a rather easy task to build the water on a plate and pull the plate out before saving.
2) Add the water behavior to the model as shown below. Note: I had better luck keeping this behavior working with one more smash than rebuild instruction (odd number greater than rebuild) for some reason (altered after screen shot). Yhnmko1 posted that if you have problems with this layout you might need to add a pair of smash and rebuild instructions and that this behavior only appears to work with small pools of water. Notice that all the REBUILD instructions are set to 0 rebuild time to make the rebuild instant.

Following the water behavior is the return state to be able to RESTART your behavior should it stop. My experience says it most surely will. Yhnmko1 used the word restart in his instructions, but you can see that my use of REFILL works the same to route the behavior back to the HOME state if needed:
