Sounds like you had a mighty fine trip. To not see many boats up in the upper end this time of year is strange... but with the water being so high.. it has put many people off.
Shame you didnt get that brown to ' hook - up ' with you and that Rapala. That would have been a battle for sure.
As far as seeing less browns that normal - I think its cyclical. These fish havent seemed to form a good spawning run for the last few years from what I see... and the hatchery is too new to be putting many fish in. They only stock 10,000 browns per year compared to 700,000 rainbows... so odds are... not in our favor.
Overall.. sounds like you had fun. Good on ya! Cheers, Brian