Ok so my home water is lake Spokane aka Long Lake and I have been fishing it in the winter for trout for the past five years. The trout really like stripped flies from buggers to bigger bait fish patterns later in the spring and early fall. There are massive chronimid hatches in the spring and summer but I have caught very few fish on them. In the dead of winter a small bugger or micro-leach under a bobber will produce very nicely an I always put a dropper off of the bugger that is some small wet fly and they account for a couple fish per day. Well the other morning I was rigging my rod and decided to put on a small gray scud that had been ridding around on the dash of my pickup since a rocky ford trip last Feb. that thing has been just killing it the last two times I have been out I have caught well over 30 trout on it, and the strikes are so crazy vicious that I have almost lost my rod overboard twice. My question is could there be scuds in a lake that big and warm? Or are there fresh water shrimp? Or does the scud just remind them of the good old days of trout chow back at the hatchery??