Wauwatosa Marina on Crooked Bay rd. used to allow launching, for a fee. The only bait available on the lake is worms. The park and marinas have a decent map of the lake.
As for as a water feature? Cut across the mouth of Hungry Bay, you will enter an area known as Pretty Channel. 1/2 mile in on right are the rapids and pools. You can beach either side of the rapids, its crown land, walk in and fish the 2 pools, picnic. Further into the channel you will get into a really isolated and picturesque (in my opinion) backwater. Yeah I'm biased, I did a lot of growing up there at my uncles house.
Pay close attention to the markers, some of the channels are only 6 foot wide, less in low water years. My buddy Ronnie has dragged up a small fortune in lost props and motors over the years