*ughs* pull type are a pain in rear. for backing up. if you ever delt with single axle trailer. you would understand, how fast they can change direction on you. and normally not the direction you want them to go.
3pt hitch, i would prefer, you can lift the hog up into the air. and back up on say thorn bushes.
yes 3pt hitch version are heavier. but majority of time i always see mention of wanting a FEL (front end loader) and bucket on. and if no FEL then front weights.
3pt hitch version, you are able to backup to edge of a lake / pond. or stream edge. to get things cut down. granted always use extreme caution near edges. but you do not have to worry as much about rear gauge wheel getting stuck. due to ability to keep bush hog lifted up on 3pt hitch. and keep the blades out of the mud / dirt.
personally prefer FEL and bucket on, due to most likely i am going to be in tall weeds, and in or around woods. and having the bucket down near the ground, allows me to catch tree limbs that have fallen or perhaps a stump. and or if my tires end up in small washout, more likely bucket will catch. before going further down into the washout.
another reason for me wanting FEL and bucket on. i tend to have a lot of hills. were i either need to back up onto. or back down hills say around a lake. and being able to use bucket if need be, to either push me up or pull me back up a hill can be nice.
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only reason why i have a pull type now, is because allis chalmers CA has a snap coupler vs 3pt hitch setup. it was cheaper for me to get pull type, vs paying extra to convert from snap coupler to 3pt hitch. that would then accept 3pt hitch attachments.
only other reason for myself to go for a pull type. would be for a RTV, and the bush hog has motor on it.