Our family's cottage is on Kash. It's my home lake and I don't spread a lot of fishing info around on it, however, the rocks are no joke. I know the lake very well and I've still managed to take out the lower on our ski boat once, and dinged a few props on the tinners over the years. Anyone on the lake calls it Krashy lake for a reason. Even the guys who've been working on the lake running barges for construction etc. are known to do in a lower unit once a season. Navionics is much better marked than it used to be, but don't for a second think that's all the obstructions. There are decent populations of pike and bass, so have fun and be careful.