Is a stabilizer jack for fifth wheel hitch worth the money?

My Dad full timed for years. Often when family came to visit his site he would put down the rear stabilizers. When I asked he said as long as he was the only 1 in camper it only moved when he did. Unless something rattled, he did not notice. But somebody else step in would wake him from sound sleep.
Once he had door open was messing in the front. He said that 'coon might of been inside all night if the stab where down.