Great info guys! I don't have much big lake BC trolling experience but used to fish lakers in northern SK. Don't be scared to try a 4-5" spoon. I used to fish with a bunch of older guys that only used Len Thompson 5 of diamonds... I always thought they we're just old school and didn't feel like changing lures but often they out fished me. Haha. Also, if using braid I always run a mono shock tippet (20' or more). That little bit of extra stretch seemed to help keep hooks from pulling out prematurely.
Just picked up a skookum new fish finder so going to be targeting some of those deep water fish (lakers) on Shuswap and Adams this summer, if anyone has any tips shoot me a message!