I fished there a couple times when I was younger, probably 10-15 years ago, mostly off the dock but sometimes out in a canoe, caught a bunch of panfish and smallies. I distinctly remember running into a guy who pulled out a cooler with a couple 3-5 pound rainbows! He tried to sell them to me lol he said he caught them around a drop off with a spoon, pretty good memory for 10-15 years ago eh? I wonder if there are still rainbows in there?
Edit*:
Did a little research and found this document , apparently there used to be brook trout in there too... during the 60's or 70's, There's a basic hydrographic chart too. pretty cool thing to find.
http://www.waterfrontmuskoka.on.ca/LakeInf...ys-northend.pdf
-Ben