Hi,
I used to fish Lake St Francis alot,
We launched out of the Marina that is on the Raisin River in South Lancaster (I believe it was $10), because my inlaws had a cottage near by
There are also other launches from Cornwall all the way to South Lancaster.
If you fish early in the morning, just fishing the rocky shorelines will get you lots of smaller smallmouth bass that my kids loved to catch. During the days fishing around the rocky islands, and docks would also produce many bass.
For the after supper fish, if there was an off shore breeze from Lancaster I would head about a mile east of Lancaster and start at shore and let the wind take me out.
Catching small bass close to shore, and then as the water got deeper catching bigger bass and then hopefully into some pike and wallye depending on what lure I was using.
There is a strong current in the whole lake to contend with and the large Laker ships and their wakes. We used to hide behind the islands to get out of the way of some of the wakes.
A great lake to explore, and if a spot looks like it should have fish, it probably does, and of course you can always fish for large perch.
It would be hard to find a spot where you cannot find fish.
As someone said, there are some rocky shoals so do not think that you can go high speed anywhere. Get a map of the lake.
Have fun fishing there.
I need to go back.
David