Wow, this thread is almost three years old.
But to answer your question, when I heard about all the wood I conjured images of some of the other obscure creeks I've looked at and decided it wouldn't be worth it. Plus, cleaning the odd tree is fine by me, but from the sounds of other people's comments, it could possibly alter the streambed and affect habitat. I'm not saying I know that for a fact, just that it sounds like it could be the case.
I met Chan Zwanzig last spring while boating out at X-mtn gorge and I think he said that he had done that and some other creeks in the area back in the early 90's and that he felt the quality and access issues didn't warrant the amount of work required. I don't remember for sure what he said as I was floating down a river during the conversation. He was spitting out names of creeks right and left that he'd done in the Flattops that I'd never heard of. Since he was super motivated at that point in time when he was doing those new runs, I'll take his memory that it wasn't worth it.
Lastly, I'm not an old dog by any means, but over time I have changed my attitude somewhat regarding stream cleaning. It's a balance of factors, but unless the creekbed held a lot of promise, I would think long and hard before removing a substantial amount of wood on a new run. How many people will benefit from it as boaters? There are lot's of other established runs that need a little maintenance and probability dictates that those established runs will benefit the larger community more because they have more users.
Lastly (2), I've met a few fisherman before while I had a chainsaw in hand and they were fine and okay with what I was doing (besides thinking I was crazy) but all it would take is one bad encounter to get the authorities involved and it would have an adverse affect on boater relations in general.
Anyhow, not trying to sound preachy, but since you asked I'm sharing my thoughts.