BC Fishing recommendations - Okanagan and Cariboo Regions

[Roy]

My son and I are heading up there in mid August doing a DIY fishing trip. He served an LDS Mission there from 2017-2019 and we are going back to do some fishing and visit some of the folks he knows there. Looking for any fishing recommendations, tips, suggestions for Kelowna and 100 Mile House areas. Have already booked a trip to fish for Salmon in Vancouver.