Wavetrek's next WRT course will be offered from April 28-30. For those holding out until the water warms up, there will be an SRT course offered May 19-21.
For those looking to progress to the SRTA course, you will need to take the SRT course. The WRT course is suitable for river enthusiasts and professionals not planning to take SRTA.
More info on the classes can be found at http://www.wavetrek.com/washington_rescue_training.htm#White water_Rescue_Technician_WRT