You have more than one issue. Welcome to East TexasI've got about 35 acres of sandy loam soil in east Texas that's had cows on it since the Civil War. I bought it last year and plan to cut hay on it. It's not just a flat surface with some mounds that need knocked down. It's mounds on top of mounds on top of mounds, all with grass grown up thru them. It's miserable even in a pickup at 3mph. It will take something that can do more than just knock off the top couple inches.
I have access to a 70hp tractor and a skid steer. I've looked at everything from a box blade to a harley rake. Disc keeps popping up as the answer but has anyone tried anything else on similar conditions? The reason the skid steer option came to mind is because then I'd be riding on smoother ground. But it might be so slow it would take a month.
It has really good grass, so the plan is to smooth it in the spring before it greens up. I'm just not sure there's a good option other than buying a disc and strapping myself to the seat.
Gophers and moles -- Castor Beans.
There is an attachment for a tractor that creates runs and allows gravity feed to place gopher and mole poison - usually based on castor beans.
It's normally applied around the edges of fields where cattle run to keep the gophers out, but will help kill off gophers if they run across the bait, so in a case like that, applying in a grid pattern will help.
I have been successful in driving away gophers and moles from my house by applying castor oil from a spray tank, along with trapping the gophers.
When I bought my house the previous owner had small dogs and liked watching the chase gopher and moles.
It had been many years since any eradication attempts.
The gophers and moles had burrows under the pier and beam house that had pushed dirt up to the point it touched the underside of the flooring.
We had to remove all that by hand from under the house while remodeling. Pre WW2 houses - never again!
After doing extensive trapping around the house, I began application of the castor oil.
After a few years I have successfully held them back to the extremities of the lawn.
The fight progresses of the rest of the property.
For me, the gophers were easiest by far and moles have been the most expensive to rid.
Castor oil is running about $40 / gallon, but has moved them, albeit slowly.
Moving the east texas sand ... Have fun