There's probably something to the 'tradition' comment.
The first stabilizers I saw had open aluminum frames. I think you can still buy them.
If you didn't put something under them, they would sink into the ground unless it was very hard and very dry. The first trailer I owned came with a set of home-made jacks that had for a base a kind of upside down, shallow bowl that was about 6 inches across. Real stable.
Then, we used to jack up the tongue 2 or 3 turns above level, place the front jacks loosely in position, then drop the tongue down to set them. Now, I have the dire warning that the stabilizers are only stabilizers, do not, repeat, do not, use them as support for the trailer. They have 6 inch square feet on them.
Of course, I put an 18 inch piece of 2X6 under each.
2011 Flagstaff 831FKBSS
2007 GMC Sierra 1500 Ext Cab, Vortec Max
Prodigy, Reece DC