Ok. TShad like to spawn over cover in the back of inlets/streams (where water comes into a lake). In ours there is not enough cover/structure in those locations. Last year I cut a bunch of woody brush and made piles where water comes in (2 big piles). That helped but is not enough. So I have tied together xmas trees ( 3 top to bottom) to make triangles. They are flat (1 xmas tree wide - 3 feet ) when on their side. I will put them over a post driven into the lake bottom to sink and form a spawning mat. I will take a pic and post later.