I moved up here from Pierce Lake... Quite a change from a lake with 2-3 rocks and no navigation markers to this
I'd suggest staying in the southern part of the lake to start. It's hard to get lost because you can almost always find Rattlesnake Island and the number of rocks and navigation markers is much lower than the upper parts of the lake.
From the south you can fairly easily expand up to the Weirs and Meredith.
I find it sure helps to have a navigator...