I witnessed a DP sink in sugar sand in Florida.
Right behind my MH no less! And the local tow trucks would 'not' come out to that area to tow because of the sugar sand. :R
Here is what we all learned NOT to do.
Do NOT Hook up any ratchet straps and or a tow rope to pull it out with someones truck. Both of those broke and sent the hooks flying almost killing one guy.
Do not shove wood under neath the tires, it does absolutely nothing except sending those shooting out like guided missiles also.
After hours of all that NOT working we look up and see a guy in a suit carrying a shovel walking towards us.
He calmly takes off his suit coat and starts to dig around each tire. And I mean 'digs a huge circumference' around each and every tire!
When he was done, told owner of the DP to get in and that heavy bus just drove right out.