I would be well up for some more Ed, I've just been up to the stream to check the stuff I had put in with The Ratbag and the stream has really shrunk since we put the bark in. Most of the bark was on a dried up bank, so we failed! I repositioned the bark, pegged it down and rebuilt the existing dam below it to try and get the water level back up again. It has worked in places but such small pieces that it wasn't worth peeling them off. Besides which, it was bloody cold! I'll leave it another couple of weeks and see how it is then, I have an idea for another stream in future which i reckon will be a lot better.