Zebra Mussells. Good or bad?

[grouser68]

Was watching one of the fishing shows here recently and they were showing some underwater footage from one of the great lakes. It was nothing but zebra mussels. No vegetation whatsoever. Everything had a layer of mussels on it.

Thats no lie, try and haul your anchor off the bottom of Lake Erie after being out there all night......takes 2-3 weight lifters to even get it started!