I placed them 6 weeks ago, I guess. And within a week they had growth on them and they are now covered. I catch fish around them every trip. They are made tightly, for small fish to survive a while to grow before feeding my bass. The next ones I make will be taller, wider and not as many branches. These will be set in deeper water in front of the first ones I placed, which are in 3-4 ft of water. For larger fish.
I think it's one of the best ideas I've seen. We have no structure in our 3 1/4 acre lake except these and boat docks.
Here's the 16 I made:
