well some food for thought, a single row gang disc, is not the best at working hard ground or anything with a bunch of material on top, BUT if the ground is pretty soft, and rock free, and better yet if it has slotted disc on it, they will work OK
but there are honestly better tools
your WAY better off with a plain jane drag disc that you can adjust angle on the cut better, add weight as needed
and they take a LOT less HP to move than a 3 point hitch of like size
I have pulled a 8 ft tow behind disc with a old model H tractor(about 16 hp) the tractor is HEAVY however almost 4,000 lbs and geared to do the work, something a LOT of newer tractors of larger HP don't have(weight that is) weight os your friend when pulling things in farming and so are gears to pull the weight of tractor and resistance of implement!
drag behind disc are also found all over and many times can be had dirt cheap, and there almost always fully rebuild able and easy to work on!
I have NO problem using them or saying there worth every penny at times(pending what you pay for them of course)
yes there more work to back up, and if traveling far is needed to get to where you keep tractor and imple,me nt as to where you plant, they are NOT the better tool for the job
but they do work and are great for smaller tractors/lower HP tractors, due to you again can adjust them a lot to make most work with what you got, and they can be had CHEAP
I have bought cleaned up and sold many over the yrs, and have bought many from the FREE side just come egt em to a couple 50-250 bucks at times and many worked AS IS
old farms tend to have them laying about there place, shoved into woods and out of the way, drive around old farm area's and I you can find several just getting rusty!
a simple stop and talk can get you them more times than not for again a few bucks,
might need a little welding or a few bolts, and or some disc's
run slotted up front , and they do eat!