Full Freezer - I hate to break it to you but the Sack's summer fishery is about Nil. The NF is glacial fed and vis is rarely better than 6". Although, in the Ferndale area it may settle out a bit.

Watch out for logs, rocks, etc. Many years ago in the summer, a sled was running around up there, the guy managed to find a rock and nearly rip his transom off. He was very luck that he didn't lose his boat.

As for fish, native summer runs are very few, there is a good char population, and the endangered springs, well they're still endangered.

Hope that helps.

LT