Hey Snrub,
Yeah, I know it would just be a matter of putting them back where I want them if they float loose, but these things are pretty heavy duty, so I dont want to have to man handle them any more than necessary. I think I may have come up with something that will solve that problem and add another aspect to the whole setup.

I'm considering building some solid fencing around the perimeter, about 4" high, out of nylon door trim, putting some plastic or carpet inside to cover all the holes in the top surface, then filling it with a sand/gravel mix....top heavy ballast and additional spawning ground to suppliment my very limited existing area.

Whatcha think?

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!