Brooktrout.......yep the put in is Pumphouse and you can take out at Radium Campground or take out at Rancho Del Rio, which will get you the Yarmony rapid. Its a great section of river and by your name I assume you like fishing, and that is some awesome fishing.
Starting about last week in June the winds will come up and it "can" be brutal to paddle but then the winds die down mid August and wind is really not an issue too often.
Another nice thing about that stretch is the hotsprings after eye of the needle rapid on river left about half mile. Just look for all the boats and beer....you can't miss it. Warm water, cold beer and good times.
I ran the Upper C 3 times this year and its runnin like big water right now, its fun, but develope your paddling skills first so you can have a safe time.