This is NOT the time of year to fish Rufus Carl. The fish scatter and are hard to laocate on the big lake. The best season is Feb. through April when natural food is scarce and the netpens draw in the big triploids.
That said you can get to them by continuing North from Blue through Grand Coulee and Coulee Dam untill you reach the Agency at Nespelem. Big tent structure on the left there. Turn left and continue staying left at one junction till you come down into the river. The Road to the main fishing area is marked by a front end loader sitting next to it.
In a boat most launch at the Elmer City Launch and run upstream 10 miles to the pens.
They still get the occasional big one there this time of year....just not near as good as earlier.