It'd work...and there are a NUMBER of variations. For example..put an axle under the front...put two lugged steel wheels
on each end...put a battery box, a solar panel to charge the batteries...an old automobile(or truck) 12v starter motor connected to the axle by a chain drive. When it's time to move the hawg tractor forward...flip a switch...if you have it geared right..it should move the tractor forward a few feet....and that's all you need...one cage length or less.
then let it sit all day in the sun...recharge the batteries for the next move.
but wait..there's more.
put a weiner hog init at the beginning of the season...a few months later you have a butcher hog inside...if it has a built in 'squeezer' (two moveable panels)...you can immobilze the hog..then shoot it in the head....tie a rope to it's hind legs...lift it up with a portable winch and a protable A-frame...and butcher it on the spot...leave the entrails where they lay...
chikens like em...
then turn it around for the next season....Imagine four or five in formation...slowly creeping across a field....
Hogs'll root up rocks...eat roots...etc...plant grass (or sumthing) behind it..
next season you have a prepared strip of land for cultivation.
Note: goats will eat the branches off trees as HIGH as they can reach..they'll clean out the underbrush. Leave the trees for shade....or not.
Wow, you've really planned that one out. I like it!
I got nothing but time since I retired...even before then when I drove a truck...hour, days, weeks and months...years , decades even...sitting behind the wheel and thinking....
If you build it...please post pictures...