The J-Hole

I assume I'm not the first person to do this, but I didn't see it so I'm claiming it.
Also, I'm not heavily familiar with the bouldering rating system.
I chose V1, because it took me multiple attempts to get out of the water.
I can do V0, without fail.
It may be easier or harder.
I also rated it as great, just because it was quite fun.
You may not agree.

There is a cool little mini-cave, in a rock cliff on the water.
Note that the water may be higher or lower, so the difficulty may decrease (higher water) or increase (lower water).
If you start from a boat, it will be VB and you'll be lame.
I wore a life vest.
It may be a little easier to get out of the water without it, but it does help if/when you fall back into it.

Start in the water.
There are a couple good hand holds that you can reach from the water.
Pull up and you'll be able to get a foot planted (keep in mind that your feet are still in the water, so it will be a little slippery - I wore Vibram FiveFingers).
There is a dry vertical ledge, at the right, that you can press your right foot against.
There is a vertical ledge, above your right foot, that you can grab to create opposite pressure.
There is a knob, above and to the left, and a couple small shelves to work with.
End up in the J-Hole.
The crux is getting your body out of the water.

Alternatively, there is a cool-looking crack on the left side that goes up and above the J-Hole.
That would be another entry, though.

36.572791,-93.067490

The easiest way is probably by boat.
Start at K Dock Marina and head South-West about 3 1/2 miles.
The formation will be on the South side of the lake, on the North-East corner of a cove entrance.
It looks like it might be a good cliff-jumping spot (that's why I first noticed it, yet didn't do any cliff-jumping).