Hydra 6 Placement/vibration

I recently bought a Hydra 6 and I also bought 3 specially made spikes from Galen Carol Audio. These replace the rubber feet. I have no other place but the floor to put the Hydra. I noticed that when 6 PCs are attached, some heavy, that the Hydra wants to tip backward so the front spike is not touching the floor. This must be common and probably worse when placed on a shelf. I added a few supports under the cables to take the weight off. I also placed a heavy weight (15lb sand bag) on top of the Hydra.

My questions are:
Is it bad to weight the Hydra down? It makes the spikes have really solid contact with the floor. Or is the point (no pun) of spikes to make the unit barely contact the floor?

Is there a simple base I can put the Hydra on like a piece of hardwood that would be better than the floor?

Just trying to get the most out of the Hydra.
Thanks!