imo these newer thinner blades don't hold an edge as long, so you sharpen them when to cut tips of the grass look frosty or ripped instead cut. For us that's every 3 or 4 weeks.
Aside from that I cut a lot of wet grass and a sharp blade makes that a whole lot easier.
Sharpening is pretty easy for me cause I modded our deck to cut closer to the ground. One of the mods was installing a few washers between the blade and spindle well that made it possible for me to use an angle grinder while the blades were still on the deck...
...yeah it's awkward and that move is best rehearsed first before powering up but it works.
My use to be neighbor use sand to fill up his wet holes and that helped a lot because then he could drive over that same wet area and not leave tracks...btw he used blow sand.
I tried that too and it works but we have a larger area plus I'm dragging cut trees across that same pasture so a perfect lawn is not our objective so much as a closely cropped lawn. It's a working lawn.
We hit golf balls out back and if you can't see them 150 yards away ...the pasture needs cutting.
