I also have come to enjoy Suttle lake. My wife and I were also there on Friday but our results were much different. In previous visits this season the Kokes were as thick as thieves with large brown seemingly everywhere below the hordes of Kokanees.
However Fridays visit left me scratching my Mellon wondering "Who let the fish out". My only thought was to quote Jase Robertson "They gone".
We were on the lake @ 7:00 am, launching near Link Creek. We opted to target brown trout, but we didn't mark anything more than a spattering of fish, not large schools as in weeks prior. We searched nearly the entire lake from depths of 3' to 60' and from Lake Creek to Link Creek seeing nadda.
After reading your report I'm having a real lack of faith in my fish finder; although the hundreds is Kokanee we have canned to date would suggest I should trust it....
We've never been skunked fishing Suttle, aside from last Friday that is.
We both used the restroom near the cleaning station, it was open but the aroma suggested a pumping was needed.
Thanks for your report, my fish finder and I are going to have a serious discussion about it's proformance, otherwise I might introduce it to my friend; the framing hammer.