I was raised in Kfalls. I thought all trout were 5-8 pounds growing up. We fished Agency Lake, primarily during the spring thaw, which is north of Klamath Lake, but kinda the same lake. The Williamson and Wood River feed the lake so when you do your research look at the guides who fish those rivers. It will be frozen over soon, so it might be spring before you get you worm wet. Good luck and good memories.
HK