I've seen guys set up the walltent right on the shore of the island and stay for 3 days a few years back.
We have not been there for 2 years now, but on one trip, I hammered 75 walleys, only 1 was legal all the rest were just under - what a blast-especially my buddy never caught a single one, maybe a burbot.
We had other people come around us to try, but they never caught one either. Must of been my day I guess.
For access to the lake, turn off SH750 at the store and go a few miles. The area will open up to a field, cut across the road allowance to the lake.