9:30 am, get a call that a crew cab pickup pulling a pontoon boat was stuck in the lake bottom close to the water. I loaded the Mudcat and headed for a simple easy recovery, or so I thought. Unloaded the Mudcat and drove down to the scene circling around in front of the truck to get a better look at what I had. As I made the circle, I felt the rear of the Mudcat drop drastically bringing me to a sudden stop, something I had never experienced in the Mudcat before. Then the front dropped as I tried to go again. Now I am setting in a sinkhole with the top of the bed level with the ground. I could go forward and backwards about 6 feet but could not come up out of the hole. When I went backwards, it would stop at the edge of the hole. Going forwards, I could get the sloped front of the tracks to start climbing out of the hole but then the back would start sinking deeper trying to stand the unit up on its rear end. I then became worried that the sink hole might be a lot deeper than the depth I was setting so I decided to get the wrecker in to keep the Mudcat from disappearing below the surface. I knew the wrecker was going to get stuck but hoped I could get it within a couple hundred feet of the Mudcat. I got further than I thought I could before the wrecker went down. I had 6 wraps left on the drum when I hooked up to the Mudcat and winched it out. Now I could pull out the pickup and trailer, which I did with no problem. Ok, got to pull out the stuck wrecker. Everything’s going good – that is until I hit a tree stump under the surface putting a 6” cut in the sidewall of the right front tire. The last picture was taken just as I hit the stump. I went ahead and pulled the wrecker up to the red top house where the Mudcat trailer was, hooked up to the trailer, loaded the cat and drove out to higher ground to change the tire. Got out the ¾ drive tools but could not break the lugs, grab the cheater pipe and immediately broke the ¾ breaker bar off in the socket. Call the wife to come get me. Go to town and borrow a 1” drive set, go back, sheared off the swivel pin in the breaker bar, still have not got one lug loose, give up, call the tire service, finally get back to the yard 4:30 pm. Not a lot of profit today but I did have some fun – except for the tire!