My worst, and think I've posted it here before, so pls forgive me.
In the 80's, I was working for a farmer. He wanted me to take his JD4020D (maybe 100HP) around the perimeter of a pasture he'd just rented and check the fence. So I had fence supplies in the FEL. The pasture had tall grass in it, and a pond at one end.
I was high idling in 7th gear as I surveyed the fence. Got near the low end of the pasture, and heard the motor bog down a little. It really surprised me--just looked like normal grass. So I hit the foot throttle to wide open to drive through it.
Meanwhile, I look at the tire tracks and notice I'm sinking in a coupla inches. Didn't make sense to me, since the ground should be dry and all. But by now, the RPMs were peaking and I was making good progress. Not a problem, I think, as I'll be out of this in a few seconds, whatever it is.
Well, the tracks became deeper, the engine bogged down, and finally, the floation front tires started bulldozing the MUD in front.
I found out later I'd driven into a bog that the owner "forgot" to tell me was there--he knew it.
Tried backing out, but by now, the frame was on the ground and the tires were simply spinning in loose mud.
Walked to a neighbor's house. We went to get the owner's JD4420: more HP and DUALS. We gathered all the steel cable and chain we could find and took off.
Within the next 15 minutes, BOTH tractors were on their axles.
A trip to four area farmers to gather all their cable, chain, and 2" thick nylon rope, plus an IH856 with duals and we were off again. This time, the pulling tractor was almost 100 yds from the bog. Separately, we pulled them out. Ran them down the dirt road for 3 miles to try and fling off the dirt in the duals. Took a lot of cleaning to get it out.
That was a long time ago, and I'll bet the ruts are still in that pasture!
ron