If you are wanting to get in shape for the short season that is likely to happen, consider taking a 4 day weekend to one of these areas
- Missoula. The lochsa river is truly amazing, and there are lots of natural hotsprings. Expect about 9h one way. Solid class III to IV.
-Silverton - The St. Joes river is pretty nice, and the towns around the area are super cool. See american whitewater for details. Expect about 3-4h past Koocanusa (9h). Easy creek style class III to IV. Much less intimidating than the power of the lochsa.