Now that you have figured out how to get stuck are you going back for more???
I am a master at getting stuck. Around here there is 3 to 5' of silt. After a rain it is easy to bury my 4 WD TC45, yep all 4 of them. Most of the time I can pull it out with the FEL or the back hoe.
One time working at a well, it took the old Dodge 500 and my 4WD hooked together to pull it out. My big girl (dog) who loves water also got stuck and it took 2 of us to pull her out.
Isn't life great when your having fun!!