I believe that I have solved the “Gap Theory” or at least the one between Turtle and Four Winds Islands.   I wonder what the depth of water is between these two northern most islands on Big Bass Lake?  Have any efforts ever been made to purchase Turtle Island from the Manistee National Forest?  It appears big enough to maintain one house. 

What is the actual distance between these two islands?  And, did Camp Martin Johnson ever utilize Turtle Island when they owned Four Winds?  How about for a primitive camping site?

Is there a good swimming area off of Turtle Island?  Again, my thanks to Big Buck for supplying the pictures and now how about someone else supplying some of the answers found on this post?  The comment box awaits you!