There are a few launches to get to the Snoho.

There is a nice launch at Langus Park in Everett, for the lower Snoho. (also the Lowell st. launch, but I have not been to that one)
There is the High Bridge launch just out of Duvall (10 min.)on the Snoqualmie about 3 min above the confluence of the Snoq. and the Sky.
The Lewis St. launch at Monroe on the Sky. is about 8 min. above the confluence of the Sky and the Snoq.

There is a web address that lists launches on the snoq., snoho, and the sky but I haven't been able to find it again, when I do I will post it.

E-mail me if you need more specific directions.

Take care and good fishing.

Doubletake