I have not fished Yale since the 70s. Back then it was a Rainbow and Kokanee lake. Mostly trolling deep. However, there was a long cove on the southwest end of the lake that held some fairly nice holdovers. There is also a good sized creek that dumps in at the head of that cove, it's called Souixon Creek. When it's open you can access it from Yale and it also held some nice trout. I go to Lake Merrill, I go right by Yale and in the past couple of years have seen more skiers and swimmers on Yale than fishermen. If you want good fly fishing Merrill is your better bet.