That big hole at the bottom of the ramp has been a huge problem ever since the State started allowing gas motors on Bluegrass Pit. The holes are created when guys power up their boat the last few inches using those big gas motors. The Prop wash washes the dirt away and make the holes. It's been a huge problem throughout the state's lakes with concrete launch ramps that don't go way down into the water.
Guys that have the v front type bass boats and the little rubber bumper on their trailer have a hard time getting the boat lined up straight on the boat trailer. They need to learn how to position the trailer at the right depth so that they can ease up the boat onto the trailer and tied the boat up without it not making it all the way up. Some times if you put the boat trailer down too far/deep on the ramp the boat won't sit right on the boat trailer.
I've seen some guys throw a rooster tail out the back of the motor trying to get their big boat back on the trailer several times. They have the boat trailer too deep in the water and therefore the nose of the boat won't fit into the boat trailer right. There is a video on this site that was posted recently about how to properly launch and recover their boat.
As for the hole. The IDNR has a trailer that they haul around the state to different launch ramps. They attached a blade (think back hoe or bulldozer type blade) that they use to push rock down the launch ramp and into the holes. They haul rock in the flat bed trailer and then dump the rock out onto the ramp and the back the trailer with the push blade down the ramp and use the blade to push the gravel down the ramp and into the hole.
The problem is that the water is so low that the end of the ramp is exposed this time of the year. The holes at the end of the ramp has been there for a while but people don't have to deal with it when the water level is higher.
They fill the hole in and in a few days the boats wash the gravel back out of the holes again. It's a continual problem.
This problem will persist as long as people use gasoline powered engines on these small lakes.
I said it before and I'll say it again. We have way too many people using this facility and this is what happens when you put so many boats on a small lake like Bluegrass.
And with Loon Pit's North Concrete Launch Ramp out of action for the same problem it has forced even more boats onto Bluegrass pit.
I really don't see any way to fix this problem other than to ban gas powered boats or to some how rebuild the concrete launch ramp so that the end of the ramp extends further into the lake and into deeper water. But I don't think that can be done without building a coffer type dam where one could work inside without the water there. Or draining the lakes to expose the shoreline more and then refill the lake after the launch ramp concrete is poured. But they didn't really make the concrete launch ramps that way. They had precast slabs of concrete that were attached together on site and then pushed into the water one at a time. That's part of the problem too. They didn't get enough of the concrete sections deep into the lake where the prop's can't wash out the dirt at the end of the ramp.
I broke my boat trailer's axel at the Bluegrass Launch Ramp back around 2006. My axel broke right in the middle while I pulled the boat out of the water after the wheels went into the hole. The boat trailer was 30 years old so it was a matter of time. But I didn't know the axel was broken until I got down to the St John's Road and Boonville New Harmony Road intersection. Some guys sitting at the stop sign there waved me down and told me that my wheels were smoking. The wheels were tilted inwards at the top of the wheel and rubbing against the fender and wheel wells. I had to life the boat up off the trailer and tie a strap between the boat trailer and the axel to make it back home. I hurt my back that night trying to life the heavy boat up about 4" of the top of the trailer in order to get the strap in the gap. Three of us were lifting the boat up. I didn't know how bad I hurt my back until I got home and it started really hurting. The next morning I could not straighten up and was left bent over for a few minutes. I must have compressed a disk in my back and it was pinching a nerve. I got some muscle relaxers from the doctor and it finally resolved. But to this day if I stand in one place for too long I get a burning sensation on the front of my left thigh. The nerves are still slightly pinched in my lower back from that incident.
So I won't go fishing at Bluegrass Pit when the water is this low as I know that the hole is still there. I have a brand new axel on my boat trailer as I had that fixed right after it happened.
I had a guy cut off the wheels and bearings from my old damage axel and he made up a new axel and welded the old bearing/wheels onto the new axel and put that new axel on my boat. The new setup works great.