Matt,
This may sound like a dumb question but do you pick them up when you are done fishing? I've been watching a video on these and they look great but I don't think they would hold up to the current here on KY Lake especially in the spring when the lake is up and down so much. We get a lot of trash in the water and I've had crappie beds with 200 lbs of concrete get wiped out by trees and such. If you put them in the shallows where there's not so much current, they will wind up in somebody's prop.
By the way, do they show up good on a depthfinder with them being plastic or whatever? No matter what, I still think they look great and may give a few a try.
The only way to have a good fishing spot is to make it yourself!