I do not think you will because of the long brush that
it leaves on the ground and the long brush will kill the
brush under it and it will not dissolve quickly into the soil.
I have not found this to be true ... Look at my pictures again that I posted above ...
Here is more of my experience ... Farmer who was haying my field, couldn't get in between where I had planted some trees ... So I cut it with my brush hog last summer ...
This is very heavy thick and tall !
Looked like this about 2 months ago ...
Looking the other direction, camera mounted in the peak of my house just taken ... Area in question is just past the barb wire fence ...
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How about a different approach for the OP, instead of BUYING, see if there is a rental place, that has different cutters to rent, even if they have one "too big" for your current tractor, if it is a "type" your interested in, it might be more prudent to rent a tractor and cutter for a day, and "try it" ... In Missouri we have a saying ... "Show-Me!" Mow part of the property with one type, then the other half with the other ... If possible than mow them both again, with the other mowers ... As in now the North part with a slasher/brush hog, now the South part with the flail ... See, and take pictures to compare (I'd love to see them

) then mow the North part again, but with the flail, and vice versa with the slasher on the South Lot ... Then buy what your happy for on your property.
Due to my job as a long distance truck driver, I'm gone a lot and only home for a day or two a month ... I don't have time to mess around with renting ...
I bought my last mower, a finish mower, even though originally I had my heart and mind set on a flail ... However from all my reading, I ended up choosing a finish mower, due to two things that seemed like I would be flirting with disaster, or at least disappointment If I bought a flail ... Most all my reading pointed to flails doing best in the 2"-4" cutting height, I wanted to cut at 5"-5.5", they also seemed to work best at ground speeds under 3 mph ... I want to mow in the 5-6 mph range ... Combine those two factors, and I bought a finish mower, I already have a brush hog.