The county tractors that have the articulated side mounted mowers have offset weights that they add to the tractor. I'd look into those, or as a minimum just add weights to the opposite wheel, not both rear wheels.

The Fecon mulcher will make quick work of the fence row. I have seen bigger ones capable of chewing up and mulching 12" DBH trees.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).