newblade...when the pvc and wood slime over, how can a fish tell what's under the slime? The DMR in our state actually PROMOTED plastic fish houses and how to build them at one time. Now plastic 55 gal drums are an issue in our state and they had to outlaw them because of handgrabbers, etc. But I would think plastic is just as good as wood or anyhting else once it's slimed...As for wood and boo, well they are natural materials so I would think they work quicker but not better in the long run. If anything the boo would be gone soon.

Ask your DMR guy this? How many times did he dive on these beds? the fish just not might have been there when he was.