HURONIA COMBUSTION

I am heading up to spruce schilling camp on une19-23 was up last year and had some luck on Big Four Lake on hwy 560 just east of shining tree, has anybody else fished that lake sure could use some tips, also does anybody know where to aquire a map of the lake. Last ear we launched on the southeast side of the bridge on hwy 560 and went north skirting a small island and then headed due north across a shallow bay to an outlet almost like a river where we caught some small picks and pike, would like to know how far you can go up that outlet and if there is another launch on that lake as the one we used was quite shallow. Thks