Have you ever considered building a Hawg Plow? (dunno what it's called)
for example (your dimensions may vary)
instead of fencing in the field...just cage the hawg...but put him in a moveable cage...say 10' x 20, complete with a water barrel, a feed box (for snacks like some corn)...and a shade. Hawgs get sunburned just like we do.
NO bottom to that cage...(perhaps a roof though...hawgs can climb and jump)...when the hawgs root all the dirt up...movit..a few feet...they have more to plow...depending on how fast they eat and how well they do the job...decided how far and how fast you move the hawg plow.
but wait..there's MORE..
when the hawgs are big enough to go to market (or in your freezer) you don't have to chase em down...they're ALREADY caged...
note: hawgs are smart, can be mean, and STRONG...I'd suggest two inch pipe (or bigger) and hawg panels...welded all together. It NEEDS to be heavy...strong hogs like I said? (move it with a tractor..., a wench...or 'other means'.)
That's great! I did that with chickens in a chicken tractor. Never thought of hogs!
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...