If you go to Bing Maps and type in Toolsboro,Ia you can finding the ramp by going out Prairie St. It looks to be north of the village. When you zoom in on it you can see a boat by the ramp. There is also trucks and trailers park there. Now I have never been there so good luck if you go. I hope this help a little.
Maybe some of the guys from the Quad Cities will jump in and help with something more helpful.